made dashboard style consistent to landingpage and login, also added translation for english and german

Added language support for english and german (swappable)

app/__init__.py

@@ -1,29 +1,13 @@
-from flask import Flask
 import os
-from flask_sqlalchemy import SQLAlchemy
+
+from flask import Flask
 from flask_login import LoginManager
-from sqlalchemy import inspect, text
+from flask_sqlalchemy import SQLAlchemy
 
 db = SQLAlchemy()
 login_manager = LoginManager()
 
 
-def apply_startup_migrations():
-    inspector = inspect(db.engine)
-
-    if "users" in inspector.get_table_names():
-        existing_columns = {column["name"] for column in inspector.get_columns("users")}
-        user_column_migrations = {
-            "two_factor_enabled": "ALTER TABLE users ADD COLUMN two_factor_enabled BOOLEAN NOT NULL DEFAULT 0",
-            "two_factor_secret": "ALTER TABLE users ADD COLUMN two_factor_secret VARCHAR(64)",
-        }
-
-        for column_name, statement in user_column_migrations.items():
-            if column_name not in existing_columns:
-                db.session.execute(text(statement))
-
-        db.session.commit()
-
 def create_app():
     app = Flask(__name__)
 
@@ -47,7 +31,6 @@ def create_app():
 
     with app.app_context():
         db.create_all()
-        apply_startup_migrations()
 
     @login_manager.user_loader
     def load_user(user_id):

app/models/gamestate.py

@@ -1,5 +1,6 @@
 from .. import db
 
+
 class GameState(db.Model):
     __tablename__ = "game_state"
 
@@ -12,6 +13,9 @@ class GameState(db.Model):
     save_name = db.Column(db.String(80), nullable=False, default="Unnamed Save")
     save_note = db.Column(db.Text, nullable=False, default="")
     is_favorite = db.Column(db.Boolean, nullable=False, default=False)
+    step_count = db.Column(db.Integer, nullable=False, default=0, server_default=db.text("0"))
+    elapsed_seconds = db.Column(db.Integer, nullable=False, default=0, server_default=db.text("0"))
+    is_solved = db.Column(db.Boolean, nullable=False, default=False, server_default=db.text("0"))
     created_at = db.Column(db.DateTime, nullable=False, server_default=db.func.now())
     updated_at = db.Column(
         db.DateTime,

app/routes/main_routes.py

@@ -1,5 +1,6 @@
 import json
 import random
+from datetime import datetime
 
 from flask import Blueprint, jsonify, render_template, request
 from flask_login import current_user, login_required
@@ -27,6 +28,19 @@ def parse_favorite_flag(raw_value):
     return str(raw_value).lower() in {"1", "true", "yes", "on"}
 
 
+def parse_non_negative_int(raw_value, default=0):
+    try:
+        value = int(raw_value)
+    except (TypeError, ValueError):
+        return default
+
+    return max(0, value)
+
+
+def get_position_label(row, col, board_size):
+    return f"{chr(65 + col)}{board_size - row}"
+
+
 def solve_queens(board_size):
     queen_positions = [-1] * board_size
     queen_solutions = []
@@ -64,6 +78,105 @@ def solve_rooks(board_size):
     return rook_positions
 
 
+def build_queens_trace(board_size):
+    queen_positions = [-1] * board_size
+    steps = []
+
+    def is_queen_position_safe(row, col):
+        for previous_row in range(row):
+            previous_col = queen_positions[previous_row]
+
+            if previous_col == col:
+                return False
+
+            if abs(previous_col - col) == abs(previous_row - row):
+                return False
+
+        return True
+
+    def place_queen(row):
+        if row == board_size:
+            steps.append({
+                "type": "solution",
+                "row": None,
+                "col": None,
+                "board": queen_positions[:],
+                "message": f"Loesung gefunden. Alle {board_size} Damen stehen ohne Konflikte."
+            })
+            return True
+
+        for col in range(board_size):
+            if not is_queen_position_safe(row, col):
+                continue
+
+            queen_positions[row] = col
+            position = get_position_label(row, col, board_size)
+            steps.append({
+                "type": "place",
+                "row": row,
+                "col": col,
+                "board": queen_positions[:],
+                "message": f"Dame auf {position} gesetzt."
+            })
+
+            if place_queen(row + 1):
+                return True
+
+            queen_positions[row] = -1
+            steps.append({
+                "type": "remove",
+                "row": row,
+                "col": col,
+                "board": queen_positions[:],
+                "message": f"Backtracking: Dame von {position} entfernt."
+            })
+
+        return False
+
+    solved = place_queen(0)
+
+    return {
+        "mode": "queens",
+        "board_size": board_size,
+        "initial_board": [-1] * board_size,
+        "steps": steps,
+        "solved": solved
+    }
+
+
+def build_rooks_trace(board_size):
+    rook_positions = solve_rooks(board_size)
+    board = [-1] * board_size
+    steps = []
+
+    for row, col in enumerate(rook_positions):
+        board[row] = col
+        position = get_position_label(row, col, board_size)
+        steps.append({
+            "type": "place",
+            "row": row,
+            "col": col,
+            "board": board[:],
+            "message": f"Turm auf {position} gesetzt."
+        })
+
+    steps.append({
+        "type": "solution",
+        "row": None,
+        "col": None,
+        "board": board[:],
+        "message": f"Loesung gefunden. Alle {board_size} Tuerme stehen ohne Konflikte."
+    })
+
+    return {
+        "mode": "rooks",
+        "board_size": board_size,
+        "initial_board": [-1] * board_size,
+        "steps": steps,
+        "solved": True
+    }
+
+
 def serialize_game_state(game_state):
     board = json.loads(game_state.board)
 
@@ -76,6 +189,9 @@ def serialize_game_state(game_state):
         "save_note": game_state.save_note,
         "is_favorite": game_state.is_favorite,
         "pieces_placed": sum(1 for column in board if column != -1),
+        "step_count": game_state.step_count,
+        "elapsed_seconds": game_state.elapsed_seconds,
+        "is_solved": game_state.is_solved,
         "created_at": game_state.created_at.strftime("%Y-%m-%d %H:%M:%S"),
         "updated_at": game_state.updated_at.strftime("%Y-%m-%d %H:%M:%S")
     }
@@ -110,7 +226,8 @@ def build_save_point_query():
 
 @main_bp.route("/")
 def home():
-    return render_template("index.html")
+    initial_language = request.accept_languages.best_match(["de", "en"]) or "de"
+    return render_template("index.html", initial_language=initial_language)
 
 
 @main_bp.route("/dashboard")
@@ -149,12 +266,24 @@ def solve_queens_route():
     return jsonify(solve_queens(board_size))
 
 
+@main_bp.route("/solve_trace")
+def solve_queens_trace_route():
+    board_size = parse_board_size(request.args.get("size"))
+    return jsonify(build_queens_trace(board_size))
+
+
 @main_bp.route("/solve_rooks")
 def solve_rooks_route():
     board_size = parse_board_size(request.args.get("size"))
     return jsonify(solve_rooks(board_size))
 
 
+@main_bp.route("/solve_rooks_trace")
+def solve_rooks_trace_route():
+    board_size = parse_board_size(request.args.get("size"))
+    return jsonify(build_rooks_trace(board_size))
+
+
 @main_bp.route("/save", methods=["POST"])
 @login_required
 def save_game():
@@ -166,6 +295,10 @@ def save_game():
     save_name = (data.get("saveName") or "").strip() or f"{piece_mode.title()} Save"
     save_note = (data.get("saveNote") or "").strip()
     is_favorite = bool(data.get("isFavorite"))
+    step_count = parse_non_negative_int(data.get("stepCount"))
+    elapsed_seconds = parse_non_negative_int(data.get("elapsedSeconds"))
+    is_solved = bool(data.get("isSolved"))
+    timestamp = datetime.utcnow()
 
     game_state = GameState(
         user_id=current_user.id,
@@ -174,7 +307,12 @@ def save_game():
         board_size=board_size,
         save_name=save_name,
         save_note=save_note,
-        is_favorite=is_favorite
+        is_favorite=is_favorite,
+        step_count=step_count,
+        elapsed_seconds=elapsed_seconds,
+        is_solved=is_solved,
+        created_at=timestamp,
+        updated_at=timestamp
     )
 
     db.session.add(game_state)

app/static/css/index.css

@@ -0,0 +1,514 @@
+:root {
+    --bg: #f4efe7;
+    --bg-accent: #efe3cd;
+    --surface: rgba(255, 250, 242, 0.82);
+    --surface-strong: #fffaf2;
+    --text: #1e1f1d;
+    --muted: #5f615c;
+    --navy: #1f3140;
+    --navy-soft: #324d63;
+    --gold: #c68b2c;
+    --gold-soft: #e7bf77;
+    --line: rgba(31, 49, 64, 0.12);
+    --shadow: 0 24px 60px rgba(37, 42, 48, 0.14);
+}
+
+*,
+*::before,
+*::after {
+    box-sizing: border-box;
+}
+
+html {
+    scroll-behavior: smooth;
+}
+
+body {
+    margin: 0;
+    min-height: 100vh;
+    color: var(--text);
+    font-family: Georgia, "Times New Roman", serif;
+    background:
+        radial-gradient(circle at top left, rgba(255, 255, 255, 0.9), transparent 24%),
+        radial-gradient(circle at 82% 18%, rgba(198, 139, 44, 0.2), transparent 20%),
+        linear-gradient(180deg, #f7f0e5 0%, #efe5d5 52%, #f4efe7 100%);
+}
+
+a {
+    color: inherit;
+    text-decoration: none;
+}
+
+main {
+    width: min(1200px, calc(100vw - 32px));
+    margin: 0 auto;
+    padding: 34px 0 56px;
+}
+
+.landing-nav {
+    width: 100%;
+    margin: 0;
+    padding: 18px max(16px, calc((100vw - 1200px) / 2)) 16px;
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: 20px;
+    position: sticky;
+    top: 0;
+    z-index: 20;
+    border-top: 0;
+    border-right: 4px solid #12212d;
+    border-bottom: 4px solid #12212d;
+    border-left: 4px solid #12212d;
+    background:
+        linear-gradient(180deg, rgba(17, 29, 39, 0.96), rgba(31, 49, 64, 0.94));
+    backdrop-filter: blur(12px);
+    box-shadow: 0 18px 40px rgba(31, 49, 64, 0.18);
+}
+
+.brand {
+    display: inline-flex;
+    align-items: center;
+    gap: 12px;
+    color: #fff7eb;
+    font-size: 18px;
+    font-weight: 700;
+    letter-spacing: 0.03em;
+}
+
+.brand-mark {
+    width: 40px;
+    height: 40px;
+    display: grid;
+    place-items: center;
+    border-radius: 8px;
+    background: linear-gradient(135deg, var(--gold), var(--gold-soft));
+    color: #2c2215;
+    font-size: 22px;
+}
+
+.landing-links {
+    display: flex;
+    align-items: center;
+    flex-wrap: wrap;
+    gap: 14px;
+    color: #ecf4fb;
+}
+
+.landing-links a:not(.nav-cta) {
+    padding: 12px 14px;
+    border: 2px solid transparent;
+    background: rgba(255, 255, 255, 0.04);
+    opacity: 0.92;
+}
+
+.landing-links a:not(.nav-cta):hover {
+    opacity: 1;
+    border-color: rgba(231, 191, 119, 0.45);
+}
+
+.lang-switch,
+.nav-cta,
+.hero-button {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    padding: 13px 20px;
+    font-weight: 700;
+    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
+}
+
+.lang-switch {
+    min-width: 68px;
+    border: 2px solid rgba(231, 191, 119, 0.45);
+    background: rgba(255, 255, 255, 0.06);
+    color: #fff7eb;
+    cursor: pointer;
+    font-family: inherit;
+}
+
+.nav-cta {
+    background: linear-gradient(135deg, var(--gold), var(--gold-soft));
+    color: #2d2418;
+}
+
+.nav-cta.secondary {
+    background: rgba(255, 255, 255, 0.08);
+    color: #f8fafc;
+    border: 1px solid rgba(255, 255, 255, 0.16);
+}
+
+.lang-switch:hover,
+.nav-cta:hover,
+.hero-button:hover {
+    transform: translateY(-2px);
+}
+
+.hero {
+    padding: 88px 0 56px;
+    display: grid;
+    grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
+    gap: 42px;
+    align-items: center;
+}
+
+.eyebrow {
+    margin: 0 0 12px;
+    color: var(--navy-soft);
+    text-transform: uppercase;
+    letter-spacing: 0.14em;
+    font-size: 13px;
+    font-weight: 700;
+}
+
+.hero h1,
+.info-band h2,
+.section-heading h2,
+.cta-panel h2 {
+    margin: 0;
+    line-height: 0.95;
+    letter-spacing: -0.03em;
+    font-size: clamp(2.8rem, 5vw, 5.5rem);
+    color: #182029;
+}
+
+.hero-text,
+.info-band p,
+.feature-card p,
+.journey-step p,
+.cta-panel p {
+    font-family: "Trebuchet MS", "Segoe UI", sans-serif;
+    font-size: 18px;
+    line-height: 1.7;
+    color: var(--muted);
+}
+
+.hero-text {
+    max-width: 640px;
+    margin: 24px 0 0;
+}
+
+.hero-actions {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 14px;
+    margin-top: 30px;
+}
+
+.hero-button.primary {
+    background: linear-gradient(135deg, var(--navy), var(--navy-soft));
+    color: #f9fbfd;
+    box-shadow: 0 14px 30px rgba(31, 49, 64, 0.22);
+}
+
+.hero-button.secondary {
+    border: 1px solid rgba(31, 49, 64, 0.16);
+    background: rgba(255, 255, 255, 0.5);
+    color: var(--navy);
+}
+
+.hero-facts {
+    margin-top: 30px;
+    display: grid;
+    grid-template-columns: repeat(3, minmax(0, 1fr));
+    gap: 14px;
+}
+
+.hero-facts article {
+    padding: 18px;
+    border-radius: 10px;
+    background: rgba(255, 250, 242, 0.65);
+    border: 1px solid rgba(31, 49, 64, 0.08);
+    box-shadow: var(--shadow);
+}
+
+.hero-facts strong {
+    display: block;
+    font-size: 18px;
+    color: var(--navy);
+}
+
+.hero-facts span {
+    display: block;
+    margin-top: 6px;
+    font-family: "Trebuchet MS", "Segoe UI", sans-serif;
+    color: var(--muted);
+    line-height: 1.5;
+}
+
+.hero-visual {
+    position: relative;
+    min-height: 620px;
+    display: grid;
+    place-items: center;
+}
+
+.board-showcase {
+    width: min(100%, 520px);
+    aspect-ratio: 1;
+    padding: 18px;
+    display: grid;
+    grid-template-columns: repeat(8, 1fr);
+    gap: 0;
+    border-radius: 14px;
+    background:
+        linear-gradient(145deg, rgba(255, 255, 255, 0.85), rgba(247, 233, 210, 0.7)),
+        rgba(255, 255, 255, 0.5);
+    box-shadow: var(--shadow);
+    position: relative;
+    overflow: hidden;
+}
+
+.board-cell {
+    position: relative;
+    display: grid;
+    place-items: center;
+    font-size: clamp(20px, 2vw, 30px);
+    transition: transform 0.45s ease, opacity 0.45s ease, background 0.45s ease;
+}
+
+.board-cell.light {
+    background: #f7e6ca;
+}
+
+.board-cell.dark {
+    background: #92613a;
+}
+
+.board-cell.highlight {
+    background: #2f485f;
+}
+
+.board-cell.queen::after {
+    content: "♛";
+    color: #fff3df;
+    text-shadow: 0 8px 18px rgba(0, 0, 0, 0.28);
+    transform: scale(1);
+    animation: queenPulse 1.8s ease-in-out infinite;
+}
+
+.floating-card {
+    position: absolute;
+    padding: 16px 18px;
+    border-radius: 8px;
+    background: rgba(255, 250, 242, 0.85);
+    border: 1px solid rgba(31, 49, 64, 0.08);
+    box-shadow: 0 18px 35px rgba(31, 49, 64, 0.14);
+    backdrop-filter: blur(10px);
+}
+
+.solver-card {
+    top: 26px;
+    right: -8px;
+}
+
+.timer-card {
+    left: -8px;
+    bottom: 34px;
+}
+
+.floating-label {
+    margin: 0;
+    font-family: "Trebuchet MS", "Segoe UI", sans-serif;
+    font-size: 12px;
+    text-transform: uppercase;
+    letter-spacing: 0.12em;
+    color: var(--muted);
+}
+
+.floating-value {
+    margin: 6px 0 0;
+    font-size: 22px;
+    color: var(--navy);
+}
+
+.info-band,
+.feature-section,
+.journey-section,
+.cta-section {
+    padding: 38px 0;
+}
+
+.info-band-inner,
+.cta-panel {
+    padding: 36px;
+    border-radius: 12px;
+    background: linear-gradient(135deg, rgba(255, 250, 242, 0.88), rgba(245, 230, 205, 0.7));
+    border: 1px solid rgba(31, 49, 64, 0.08);
+    box-shadow: var(--shadow);
+}
+
+.info-band h2 {
+    font-size: clamp(2.2rem, 4vw, 4.2rem);
+    margin-bottom: 18px;
+}
+
+.section-heading {
+    max-width: 760px;
+    margin-bottom: 28px;
+}
+
+.section-heading h2 {
+    font-size: clamp(2.2rem, 3.8vw, 4rem);
+}
+
+.feature-grid {
+    display: grid;
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+    gap: 18px;
+}
+
+.feature-card,
+.journey-step {
+    padding: 26px;
+    border-radius: 10px;
+    background: rgba(255, 250, 242, 0.72);
+    border: 1px solid rgba(31, 49, 64, 0.08);
+    box-shadow: var(--shadow);
+}
+
+.feature-icon {
+    display: inline-grid;
+    place-items: center;
+    width: 54px;
+    height: 54px;
+    border-radius: 8px;
+    background: linear-gradient(135deg, var(--navy), var(--navy-soft));
+    color: #fff3df;
+    font-size: 28px;
+}
+
+.feature-card h3,
+.journey-step h3 {
+    margin: 18px 0 10px;
+    font-size: 28px;
+    color: #1c2833;
+}
+
+.journey-grid {
+    display: grid;
+    grid-template-columns: repeat(3, minmax(0, 1fr));
+    gap: 18px;
+}
+
+.step-number {
+    display: inline-block;
+    margin-bottom: 18px;
+    color: var(--gold);
+    font-size: 14px;
+    font-weight: 700;
+    letter-spacing: 0.16em;
+}
+
+.cta-panel {
+    text-align: center;
+}
+
+.cta-panel h2 {
+    font-size: clamp(2.2rem, 4vw, 4.4rem);
+}
+
+.cta-panel p {
+    max-width: 760px;
+    margin: 18px auto 0;
+}
+
+.cta-panel .hero-actions {
+    justify-content: center;
+}
+
+@keyframes queenPulse {
+    0%,
+    100% {
+        transform: scale(1) translateY(0);
+    }
+
+    50% {
+        transform: scale(1.08) translateY(-2px);
+    }
+}
+
+@media (max-width: 980px) {
+    .hero {
+        grid-template-columns: 1fr;
+        gap: 28px;
+        padding-top: 54px;
+    }
+
+    .hero-visual {
+        min-height: auto;
+    }
+
+    .journey-grid,
+    .feature-grid,
+    .hero-facts {
+        grid-template-columns: 1fr;
+    }
+
+    .solver-card,
+    .timer-card {
+        position: static;
+    }
+
+    .hero-visual {
+        gap: 16px;
+    }
+}
+
+@media (max-width: 760px) {
+    .landing-nav {
+        position: static;
+        width: 100%;
+        padding: 18px 16px;
+        border-left-width: 0;
+        border-right-width: 0;
+        gap: 14px;
+        align-items: flex-start;
+        flex-direction: column;
+    }
+
+    .brand {
+        width: 100%;
+        justify-content: space-between;
+        gap: 8px;
+        font-size: 16px;
+    }
+
+    .brand-mark {
+        display: none;
+    }
+
+    .landing-links {
+        justify-content: flex-start;
+        gap: 10px;
+        width: 100%;
+    }
+
+    .landing-links a:not(.nav-cta),
+    .lang-switch,
+    .nav-cta {
+        padding: 11px 14px;
+    }
+
+    main {
+        width: min(100%, calc(100vw - 24px));
+    }
+
+    .hero h1,
+    .info-band h2,
+    .section-heading h2,
+    .cta-panel h2 {
+        line-height: 1.02;
+    }
+
+    .info-band-inner,
+    .cta-panel,
+    .feature-card,
+    .journey-step {
+        padding: 24px;
+    }
+
+    .floating-card {
+        width: 100%;
+    }
+}

app/static/css/login.css

@@ -1,17 +1,21 @@
 :root {
-    --nav-bg-color: #172033;
-    --panel-bg-color: rgba(255, 255, 255, 0.18);
-    --panel-border-color: rgba(255, 255, 255, 0.24);
-    --text-color: #172033;
-    --muted-text-color: #475569;
-    --success-color: #15803d;
+    --bg: #f4efe7;
+    --bg-accent: #efe3cd;
+    --surface: rgba(255, 250, 242, 0.88);
+    --surface-strong: #fffaf2;
+    --surface-soft: rgba(255, 247, 235, 0.72);
+    --text-color: #1e1f1d;
+    --muted-text-color: #5f615c;
+    --navy: #1f3140;
+    --navy-soft: #324d63;
+    --gold: #c68b2c;
+    --gold-soft: #e7bf77;
+    --gold-pale: #f1ddae;
+    --line: rgba(31, 49, 64, 0.12);
+    --shadow: 0 24px 60px rgba(37, 42, 48, 0.14);
+    --success-color: #166534;
     --info-color: #1d4ed8;
-    --error-color: #b91c1c;
-}
-
-@font-face {
-    font-family: "Geist Sans";
-    src: url("https://assets.codepen.io/605876/GeistVF.ttf") format("truetype");
+    --error-color: #991b1b;
 }
 
 *,
@@ -24,74 +28,103 @@ body {
     margin: 0;
     min-height: 100vh;
     color: var(--text-color);
-    font-family: "Geist Sans", system-ui, sans-serif;
+    font-family: Georgia, "Times New Roman", serif;
     background:
-        radial-gradient(circle at top left, rgba(255, 255, 255, 0.45), transparent 32%),
-        linear-gradient(135deg, #d2ecff 0%, #b8c6db 48%, #7f8ea3 100%);
+        radial-gradient(circle at top left, rgba(255, 255, 255, 0.9), transparent 24%),
+        radial-gradient(circle at 82% 18%, rgba(198, 139, 44, 0.2), transparent 20%),
+        linear-gradient(180deg, #f7f0e5 0%, #efe5d5 52%, #f4efe7 100%);
 }
 
-nav {
+a {
+    color: inherit;
+    text-decoration: none;
+}
+
+.auth-nav {
     width: 100%;
-    min-height: 68px;
-    padding: 15px 30px;
+    margin: 0;
+    padding: 18px max(16px, calc((100vw - 1200px) / 2)) 16px;
     display: flex;
     align-items: center;
     justify-content: space-between;
-    gap: 20px;
-    background: var(--nav-bg-color);
+    gap: 18px;
+    position: sticky;
+    top: 0;
+    z-index: 10;
+    border-top: 0;
+    border-right: 4px solid #12212d;
+    border-bottom: 4px solid #12212d;
+    border-left: 4px solid #12212d;
+    background: linear-gradient(180deg, rgba(17, 29, 39, 0.96), rgba(31, 49, 64, 0.94));
+    backdrop-filter: blur(12px);
+    box-shadow: 0 18px 40px rgba(31, 49, 64, 0.18);
 }
 
-nav ul {
+.brand {
+    display: inline-flex;
+    align-items: center;
+    gap: 12px;
+    color: #fff7eb;
+    font-size: 18px;
+    font-weight: 700;
+    letter-spacing: 0.03em;
+}
+
+.brand-mark {
+    width: 40px;
+    height: 40px;
+    display: grid;
+    place-items: center;
+    border-radius: 8px;
+    background: linear-gradient(135deg, var(--gold), var(--gold-soft));
+    color: #2c2215;
+    font-size: 22px;
+}
+
+.nav-links {
     margin: 0;
     padding: 0;
     list-style: none;
     display: flex;
+    align-items: center;
     flex-wrap: wrap;
-    gap: 20px;
+    gap: 12px;
+    color: #ecf4fb;
 }
 
-nav a {
-    color: white;
-    text-decoration: none;
-    font-size: 16px;
+.nav-links a,
+.nav-button {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    min-height: 46px;
+    padding: 11px 16px;
+    border: 2px solid transparent;
+    background: rgba(255, 255, 255, 0.06);
+    color: inherit;
+    font: inherit;
+    font-weight: 700;
+    cursor: pointer;
+    transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
 }
 
-nav a:hover {
-    color: #93c5fd;
+.nav-links a:hover,
+.nav-button:hover {
+    transform: translateY(-2px);
+    border-color: rgba(231, 191, 119, 0.45);
+    color: #fff7eb;
 }
 
 .nav-form {
     margin: 0;
-    padding: 0;
-    width: auto;
-    background: none;
-    border: 0;
-    box-shadow: none;
-    backdrop-filter: none;
-}
-
-.nav-button {
-    margin: 0;
-    padding: 0;
-    background: none;
-    border: 0;
-    color: white;
-    font: inherit;
-    cursor: pointer;
-}
-
-.nav-button:hover {
-    transform: none;
-    box-shadow: none;
-    color: #93c5fd;
 }
 
 .auth-shell {
-    min-height: calc(100vh - 68px);
+    min-height: calc(100vh - 78px);
     display: flex;
     align-items: center;
     justify-content: center;
-    padding: 32px 16px;
+    padding: 38px 16px 48px;
 }
 
 .settings-shell {
@@ -99,18 +132,17 @@ nav a:hover {
 }
 
 .auth-panel {
-    width: min(420px, 100%);
+    width: min(460px, 100%);
     padding: 34px;
-    border-radius: 20px;
-    background: var(--panel-bg-color);
-    border: 1px solid var(--panel-border-color);
-    backdrop-filter: blur(16px);
-    box-shadow: 0 18px 45px rgba(15, 23, 42, 0.18);
+    border-radius: 12px;
+    background: linear-gradient(135deg, rgba(255, 250, 242, 0.94), rgba(245, 230, 205, 0.8));
+    border: 1px solid var(--line);
+    box-shadow: var(--shadow);
     animation: fadeIn 0.8s ease;
 }
 
 .settings-panel {
-    width: min(900px, 100%);
+    width: min(980px, 100%);
 }
 
 .settings-grid {
@@ -134,12 +166,31 @@ nav a:hover {
 h1,
 h2 {
     margin-top: 0;
+    color: #182029;
+}
+
+h1 {
+    margin-bottom: 10px;
+    line-height: 0.98;
+    letter-spacing: -0.03em;
+    font-size: clamp(2.2rem, 4vw, 3.6rem);
+}
+
+h2 {
+    margin-bottom: 10px;
+    font-size: 1.55rem;
+}
+
+.muted,
+.field-hint {
+    font-family: "Trebuchet MS", "Segoe UI", sans-serif;
+    line-height: 1.6;
+    color: var(--muted-text-color);
 }
 
 .muted {
     margin: 0 0 20px;
-    color: var(--muted-text-color);
-    line-height: 1.5;
+    font-size: 17px;
 }
 
 form {
@@ -148,65 +199,56 @@ form {
     gap: 8px;
     margin-top: 18px;
     padding: 24px;
-    border-radius: 16px;
-    background: rgba(255, 255, 255, 0.2);
-    border: 1px solid rgba(255, 255, 255, 0.22);
+    border-radius: 10px;
+    background: var(--surface-soft);
+    border: 1px solid rgba(31, 49, 64, 0.1);
 }
 
 label {
     margin-top: 8px;
     font-size: 14px;
-    font-weight: 600;
+    font-weight: 700;
+    color: var(--navy);
+    letter-spacing: 0.03em;
 }
 
 input {
     width: 100%;
     padding: 12px 14px;
-    border: 1px solid rgba(71, 85, 105, 0.25);
-    border-radius: 10px;
+    border: 1px solid rgba(31, 49, 64, 0.16);
+    border-radius: 0;
     font: inherit;
     background: rgba(255, 255, 255, 0.86);
     color: var(--text-color);
 }
 
 input:focus {
-    outline: 2px solid rgba(59, 130, 246, 0.35);
-    border-color: rgba(59, 130, 246, 0.5);
+    outline: 2px solid rgba(198, 139, 44, 0.28);
+    border-color: rgba(198, 139, 44, 0.55);
 }
 
 .field-hint {
     margin: 0;
     font-size: 13px;
-    color: var(--muted-text-color);
-}
-
-.checkbox-row {
-    display: flex;
-    align-items: center;
-    gap: 10px;
-    margin: 10px 0 6px;
-}
-
-.checkbox-row input {
-    width: auto;
 }
 
 button {
     margin-top: 14px;
-    padding: 12px 16px;
+    min-height: 50px;
+    padding: 12px 18px;
     border: none;
-    border-radius: 10px;
-    background: linear-gradient(135deg, #eff6ff, #dbeafe);
-    color: #172033;
+    border-radius: 0;
+    background: linear-gradient(135deg, var(--gold), var(--gold-soft));
+    color: #2d2418;
     cursor: pointer;
     font-size: 16px;
-    font-weight: 600;
+    font-weight: 700;
     transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
 }
 
 button:hover {
     transform: translateY(-2px);
-    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.18);
+    box-shadow: 0 12px 24px rgba(31, 49, 64, 0.16);
 }
 
 button:active {
@@ -220,18 +262,20 @@ button:active {
 }
 
 .button-row button {
-    flex: 1 1 160px;
+    flex: 1 1 180px;
 }
 
 .secondary-button {
-    background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
+    background: linear-gradient(135deg, var(--navy), var(--navy-soft));
+    color: #f9fbfd;
 }
 
 .message {
     margin: 0 0 14px;
     padding: 12px 14px;
-    border-radius: 10px;
+    border-radius: 8px;
     font-size: 14px;
+    font-family: "Trebuchet MS", "Segoe UI", sans-serif;
 }
 
 .message.error {
@@ -254,9 +298,9 @@ button:active {
     justify-content: center;
     margin: 8px 0 6px;
     padding: 18px;
-    border-radius: 16px;
-    background: rgba(255, 255, 255, 0.38);
-    border: 1px solid rgba(255, 255, 255, 0.24);
+    border-radius: 10px;
+    background: rgba(255, 250, 242, 0.72);
+    border: 1px solid rgba(31, 49, 64, 0.12);
 }
 
 .qr-code {
@@ -266,7 +310,7 @@ button:active {
     min-width: 220px;
     min-height: 220px;
     padding: 10px;
-    border-radius: 14px;
+    border-radius: 8px;
     background: #ffffff;
     color: var(--muted-text-color);
     text-align: center;
@@ -276,15 +320,32 @@ button:active {
     display: block;
 }
 
-@media (max-width: 640px) {
-    nav {
-        padding: 16px 20px;
+@media (max-width: 760px) {
+    .auth-nav {
+        position: static;
+        padding: 18px 16px;
+        border-left-width: 0;
+        border-right-width: 0;
         flex-direction: column;
         align-items: flex-start;
     }
 
+    .brand {
+        width: 100%;
+        font-size: 16px;
+    }
+
+    .nav-links {
+        width: 100%;
+    }
+
+    .nav-links a,
+    .nav-button {
+        padding: 10px 14px;
+    }
+
     .auth-shell {
-        padding: 20px 12px 28px;
+        padding: 22px 12px 28px;
     }
 
     .auth-panel {

app/static/js/index.js

@@ -0,0 +1,238 @@
+const HERO_BOARD_SIZE = 8;
+const heroBoard = document.getElementById("heroBoard");
+const langSwitch = document.getElementById("langSwitch");
+const supportedLanguages = ["de", "en"];
+const initialLanguage = window.LANDING_INITIAL_LANGUAGE || "de";
+
+const translations = {
+    de: {
+        "meta.title": "8-Damen- und 8-Türme Solver",
+        "nav.brand": "8-Damen- und 8-Türme Solver",
+        "nav.problem": "Problem",
+        "nav.features": "Features",
+        "nav.journey": "Ablauf",
+        "nav.login": "Login",
+        "nav.signup": "Create Account",
+        "hero.eyebrow": "Interaktives Lernen mit Strategie, Logik und Backtracking",
+        "hero.title": "Entdecke das Acht-Damen- und Acht-Türme-Problem.",
+        "hero.text": "Diese App macht aus einem klassischen Informatik- und Mathematikproblem ein interaktives Erlebnis: Setze Damen oder Türme, verfolge den Solver Schritt fuer Schritt, miss deine Zeit und speichere clevere Zwischenstände.",
+        "hero.primaryCta": "Jetzt starten",
+        "hero.secondaryCta": "Bereits Account? Login",
+        "hero.fact1Title": "Skalierbar",
+        "hero.fact1Text": "Brettgrösse flexibel anpassen",
+        "hero.fact2Title": "Schritt für Schritt",
+        "hero.fact2Text": "Solver mit Animation",
+        "hero.fact3Title": "Save-Points",
+        "hero.fact3Text": "Zeit und Fortschritt behalten",
+        "hero.solverLabel": "Solver",
+        "hero.solverValue": "Backtracking live",
+        "hero.challengeLabel": "Challenge",
+        "hero.challengeValue": "Zeit und Schritte messen",
+        "problem.eyebrow": "Warum dieses Problem spannend ist",
+        "problem.title": "Die Acht-Damen- und Acht-Türme-Probleme sind mehr als Schachrätsel.",
+        "problem.text": "Beim Acht-Damen-Problem suchst du eine Anordnung von acht Damen auf einem Schachbrett, sodass sich keine zwei Damen schlagen. Beim Acht-Tuerme-Problem gilt dieselbe Idee für Türme, nur mit einfacheren Konfliktregeln. Beide Aufgaben zeigen, wie Mustererkennung, systematische Suche und Backtracking funktionieren.<br><br>Gerade beim Damenproblem wird schnell sichtbar, warum Strategie wichtig ist: Es gibt unzählige moegliche Platzierungen, aber nur sehr wenige wirklich gültige Loesungen. Genau das macht diese App spannend, weil man nicht nur das Ergebnis sieht, sondern auch den Weg dorthin.",
+        "features.eyebrow": "Was die Applikation bietet",
+        "features.title": "Von der Idee bis zur gelösten Stellung.",
+        "features.card1Title": "Interaktives Brett",
+        "features.card1Text": "Setze Damen oder Türme direkt auf dem Brett und prüfe, ob deine Anordnung konfliktfrei ist.",
+        "features.card2Title": "Solver mit Animation",
+        "features.card2Text": "Beobachte den Loesungsweg Schritt fuer Schritt und verstehe, wie Backtracking arbeitet.",
+        "features.card3Title": "Zeit und Schritte",
+        "features.card3Text": "Miss deinen Fortschritt während des Spiels und vergleiche unterschiedliche Versuche.",
+        "features.card4Title": "Save-Points",
+        "features.card4Text": "Speichere Zwischenstände mit Notizen, Zeiten und Schrittzahl fuer späteres Weiterarbeiten.",
+        "features.card5Title": "Skalierbare Bretter",
+        "features.card5Text": "Passe die Brettgrösse an und erkunde die Probleme nicht nur auf dem klassischen 8x8-Brett.",
+        "journey.eyebrow": "So funktioniert dein Einstieg",
+        "journey.title": "In wenigen Schritten vom ersten Besuch zur eigenen Lösung.",
+        "journey.step1Title": "Account erstellen",
+        "journey.step1Text": "Registriere dich und erhalte Zugang zu Dashboard, Save-Points und deinem Fortschritt.",
+        "journey.step2Title": "Spielmodus wählen",
+        "journey.step2Text": "Arbeite mit Damen oder Türmen und passe die Brettgrösse deinem Ziel an.",
+        "journey.step3Title": "Loesen oder analysieren",
+        "journey.step3Text": "Teste eigene Ideen oder lass dir die Lösung visuell vom Solver lösen lassen, dabei wird 1:1 gezeigt wie der Solver vorgeht.",
+        "cta.eyebrow": "Bereit für den ersten Versuch?",
+        "cta.title": "Mach aus einem bekannten Problem ein sichtbares Lernerlebnis.",
+        "cta.text": "Starte mit einem Account, speichere deine Zwischenstände und finde heraus, wie schnell du eine konfliktfreie Lösung erreichst.",
+        "cta.primaryCta": "Create Account",
+        "cta.secondaryCta": "Login"
+    },
+    en: {
+        "meta.title": "8 Queens and 8 Rooks Solver",
+        "nav.brand": "8 Queens and 8 Rooks Solver",
+        "nav.problem": "Problem",
+        "nav.features": "Features",
+        "nav.journey": "Journey",
+        "nav.login": "Login",
+        "nav.signup": "Create Account",
+        "hero.eyebrow": "Interactive learning with strategy, logic, and backtracking",
+        "hero.title": "Discover the Eight Queens and Eight Rooks puzzle.",
+        "hero.text": "This app turns a classic computer science and mathematics problem into an interactive experience: place queens or rooks, follow the solver step by step, track your time, and save clever checkpoints.",
+        "hero.primaryCta": "Get Started",
+        "hero.secondaryCta": "Already have an account? Login",
+        "hero.fact1Title": "Scalable",
+        "hero.fact1Text": "Adjust the board size freely",
+        "hero.fact2Title": "Step by step",
+        "hero.fact2Text": "Animated solver walkthrough",
+        "hero.fact3Title": "Save points",
+        "hero.fact3Text": "Keep your time and progress",
+        "hero.solverLabel": "Solver",
+        "hero.solverValue": "Backtracking in motion",
+        "hero.challengeLabel": "Challenge",
+        "hero.challengeValue": "Measure time and steps",
+        "problem.eyebrow": "Why this puzzle matters",
+        "problem.title": "The Eight Queens and Eight Rooks problems are more than chess puzzles.",
+        "problem.text": "In the Eight Queens problem, you search for a way to place eight queens on a chessboard so that no two queens can attack each other. The Eight Rooks problem follows the same idea for rooks, but with simpler conflict rules. Both tasks show how pattern recognition, systematic search, and backtracking work.<br><br>The queens puzzle quickly makes it obvious why strategy matters: there are countless possible placements, but only a few truly valid solutions. That is what makes this app interesting, because you do not just see the result, you also see the path to it.",
+        "features.eyebrow": "What the application offers",
+        "features.title": "From the first idea to a solved position.",
+        "features.card1Title": "Interactive board",
+        "features.card1Text": "Place queens or rooks directly on the board and check whether your setup is conflict-free.",
+        "features.card2Title": "Animated solver",
+        "features.card2Text": "Watch the solving path step by step and understand how backtracking works.",
+        "features.card3Title": "Time and steps",
+        "features.card3Text": "Track your progress during play and compare different attempts.",
+        "features.card4Title": "Save points",
+        "features.card4Text": "Store checkpoints with notes, time, and step count so you can continue later.",
+        "features.card5Title": "Scalable boards",
+        "features.card5Text": "Adjust the board size and explore the puzzle beyond the classic 8x8 board.",
+        "journey.eyebrow": "How your first session works",
+        "journey.title": "Reach your own solution in just a few steps.",
+        "journey.step1Title": "Create an account",
+        "journey.step1Text": "Sign up and unlock the dashboard, save points, and your tracked progress.",
+        "journey.step2Title": "Choose a game mode",
+        "journey.step2Text": "Work with queens or rooks and tune the board size to your goal.",
+        "journey.step3Title": "Solve or analyze",
+        "journey.step3Text": "Test your own ideas or let the solver show the solution visually, with a 1:1 view of each solving step.",
+        "cta.eyebrow": "Ready for your first attempt?",
+        "cta.title": "Turn a famous puzzle into a visible learning experience.",
+        "cta.text": "Start with an account, save your checkpoints, and find out how quickly you can reach a conflict-free solution.",
+        "cta.primaryCta": "Create Account",
+        "cta.secondaryCta": "Login"
+    }
+};
+
+const queenPatterns = [
+    [0, 4, 7, 5, 2, 6, 1, 3],
+    [1, 3, 5, 7, 2, 0, 6, 4],
+    [2, 5, 7, 0, 3, 6, 4, 1]
+];
+
+let currentPatternIndex = 0;
+
+function normalizeLanguage(language) {
+    const shortLanguage = String(language || "").trim().slice(0, 2).toLowerCase();
+    return supportedLanguages.includes(shortLanguage) ? shortLanguage : "de";
+}
+
+function getStoredLanguage() {
+    try {
+        return window.localStorage.getItem("preferredLanguage");
+    } catch (error) {
+        return null;
+    }
+}
+
+function storeLanguage(language) {
+    try {
+        window.localStorage.setItem("preferredLanguage", language);
+    } catch (error) {
+        return;
+    }
+}
+
+function detectBrowserLanguage() {
+    const browserLanguage = navigator.language || navigator.userLanguage || initialLanguage;
+    return normalizeLanguage(browserLanguage);
+}
+
+function setLanguage(language) {
+    const resolvedLanguage = normalizeLanguage(language);
+    const dictionary = translations[resolvedLanguage];
+    const i18nElements = document.querySelectorAll("[data-i18n]");
+
+    document.documentElement.lang = resolvedLanguage;
+    document.body.dataset.language = resolvedLanguage;
+
+    i18nElements.forEach((element) => {
+        const key = element.dataset.i18n;
+        const translatedText = dictionary[key];
+
+        if (!translatedText) {
+            return;
+        }
+
+        if (element.tagName === "TITLE" || translatedText.includes("<br")) {
+            element.innerHTML = translatedText;
+            return;
+        }
+
+        element.textContent = translatedText;
+    });
+
+    if (langSwitch) {
+        langSwitch.textContent = resolvedLanguage.toUpperCase();
+        langSwitch.setAttribute("aria-label", resolvedLanguage === "de" ? "Switch language to English" : "Sprache auf Deutsch wechseln");
+        langSwitch.title = resolvedLanguage === "de" ? "Switch to English" : "Zu Deutsch wechseln";
+    }
+
+    storeLanguage(resolvedLanguage);
+}
+
+function getPreferredLanguage() {
+    return normalizeLanguage(getStoredLanguage() || detectBrowserLanguage() || initialLanguage);
+}
+
+function createHeroBoard() {
+    if (!heroBoard) {
+        return;
+    }
+
+    heroBoard.innerHTML = "";
+
+    for (let row = 0; row < HERO_BOARD_SIZE; row += 1) {
+        for (let col = 0; col < HERO_BOARD_SIZE; col += 1) {
+            const cell = document.createElement("div");
+            cell.className = `board-cell ${(row + col) % 2 === 0 ? "light" : "dark"}`;
+            cell.dataset.row = String(row);
+            cell.dataset.col = String(col);
+            heroBoard.appendChild(cell);
+        }
+    }
+}
+
+function applyPattern(pattern) {
+    if (!heroBoard) {
+        return;
+    }
+
+    const cells = heroBoard.querySelectorAll(".board-cell");
+
+    cells.forEach((cell) => {
+        const row = Number(cell.dataset.row);
+        const col = Number(cell.dataset.col);
+        const hasQueen = pattern[row] === col;
+
+        cell.classList.toggle("queen", hasQueen);
+        cell.classList.toggle("highlight", hasQueen);
+    });
+}
+
+function rotatePattern() {
+    currentPatternIndex = (currentPatternIndex + 1) % queenPatterns.length;
+    applyPattern(queenPatterns[currentPatternIndex]);
+}
+
+if (langSwitch) {
+    langSwitch.addEventListener("click", () => {
+        const nextLanguage = document.documentElement.lang === "de" ? "en" : "de";
+        setLanguage(nextLanguage);
+    });
+}
+
+createHeroBoard();
+applyPattern(queenPatterns[currentPatternIndex]);
+setLanguage(getPreferredLanguage());
+
+if (heroBoard) {
+    window.setInterval(rotatePattern, 2200);
+}

app/templates/dashboard.html

@@ -10,18 +10,39 @@
 </head>
 
 <body>
+    <nav class="dashboard-nav">
+        <a class="brand" href="{{ url_for('main.home') }}">
+            <span class="brand-mark">♛</span>
+            <span>8-Damen- und 8-Türme Solver</span>
+        </a>
+
+        <div class="nav-actions">
+            <a class="nav-link" href="{{ url_for('main.dashboard') }}" id="navDashboardLink">Dashboard</a>
+
+            <button class="nav-link-button lang-switch" id="langSwitch" type="button"
+                aria-label="Sprache wechseln">DE</button>
+
+            <a class="account-shortcut" href="{{ url_for('login.login_settings') }}"
+                aria-label="Konto und Login-Einstellungen öffnen">
+                <span class="account-avatar" aria-hidden="true">{{ current_user.username[:1]|upper }}</span>
+                <span class="account-copy">
+                    <span class="account-label" id="accountLabel">Account</span>
+                    <span class="account-name">{{ current_user.username }}</span>
+                </span>
+            </a>
 
-    <nav class="navbar">
-        <div class="nav-left">♛ 8-Queens App</div>
-        <div class="nav-right">
-            <a href="{{ url_for('main.dashboard') }}">Dashboard</a>
-            <a href="{{ url_for('login.login_settings') }}">Login settings</a>
             <form action="{{ url_for('login.logout') }}" method="post" class="nav-logout-form">
                 <button class="nav-link-button" type="submit">Logout</button>
             </form>
         </div>
     </nav>
 
+    <button class="settings-trigger" id="settingsTrigger" onclick="toggleSidebar()" type="button"
+        aria-controls="settingsSidebar" aria-expanded="false">
+        <span class="settings-trigger-arrow" id="settingsTriggerArrow">→</span>
+        <span class="settings-trigger-label" id="settingsTriggerLabel">Brett-Einstellungen</span>
+    </button>
+
     <div class="container">
         {% with messages = get_flashed_messages(with_categories=true) %}
         {% if messages %}
@@ -33,113 +54,232 @@
         {% endif %}
         {% endwith %}
 
-        <div class="card">
-            <h2>👋 Willkommen, {{ current_user.username }}</h2>
+        <section class="dashboard-intro card">
+            <p class="section-kicker" id="introKicker">Puzzle-Modus</p>
+            <h1 id="introTitle">Wähl deinen Modus und löse das Brett auf deine Art.</h1>
+            <p class="dashboard-intro-text" id="introText">
+                Wechsle zwischen Damen und Türmen, nutze Animation oder Sofort-Lösung und öffne die
+                Brett-Einstellungen jederzeit über den linken Seiten-Tab.
+            </p>
 
-            <div class="user-info">
-                <p><strong>ID:</strong> {{ current_user.id }}</p>
-                <p><strong>Username:</strong> {{ current_user.username }}</p>
-
-                <p><strong>2FA:</strong> {% if current_user.two_factor_enabled %}Authenticator app enabled{% else %}Disabled{% endif %}</p>
-                <p><strong>Erstellt:</strong> {{ current_user.created_at }}</p>
-            </div>
-
-            <div class="inline-actions">
-                <a class="btn secondary" href="{{ url_for('login.login_settings') }}">Open login settings</a>
-                <form action="{{ url_for('login.logout') }}" method="post">
-                    <button class="btn danger" type="submit">Logout</button>
-                </form>
-            </div>
-        </div>
-
-        <div class="mode-switch">
-            <button class="btn active" onclick="setMode('queens')" id="btnQueens">♛ Damen</button>
-            <button class="btn secondary" onclick="setMode('rooks')" id="btnRooks">♜ Türme</button>
-            <button class="btn secondary" onclick="toggleSidebar()" id="btnSidebar">Board Settings</button>
+            <div class="mode-switch" aria-label="Spielmodus">
+                <button class="btn active" onclick="setMode('queens')" id="btnQueens" type="button">♛ Damen</button>
+                <button class="btn secondary" onclick="setMode('rooks')" id="btnRooks" type="button">♜ Tuerme</button>
             </div>
+        </section>
 
         <div class="card game-card">
-            <h2>♟️ Damen- und Tuerme-Spiel</h2>
-            <p class="board-size-info">Aktuelle Brettgroesse: <span id="boardSizeValue">8</span> x <span
-                    id="boardSizeValueMirror">8</span></p>
+            <div class="game-card-header">
+                <div class="game-card-copy">
+                    <p class="section-kicker" id="gameModeEyebrow">Damen-Modus</p>
+                    <h2 id="gameTitle">Damen-Spielbrett</h2>
+                    <p class="board-mode-text" id="boardModeText">
+                        Platziere Damen so, dass keine zwei dieselbe Spalte oder Diagonale teilen.
+                    </p>
+                </div>
+
+                <button class="info-button" id="infoButton" onclick="toggleInfoModal(true)" type="button"
+                    aria-label="Spielregeln und Hilfe anzeigen">Regeln & Hilfe</button>
+            </div>
+
+            <p class="board-size-info" id="boardSizeInfo"><span id="boardSizeInfoPrefix">Aktuelle Brettgrösse im
+                    Damen-Modus:</span>
+                <span id="boardSizeValue">8</span> x <span id="boardSizeValueMirror">8</span>
+            </p>
+
+            <div class="game-stats" aria-label="Spielstatus">
+                <article class="game-stat-card">
+                    <p class="game-stat-label" id="stepsLabel">Schritte</p>
+                    <p class="game-stat-value" id="stepCounterValue">0</p>
+                </article>
+                <article class="game-stat-card">
+                    <p class="game-stat-label" id="timeLabel">Zeit</p>
+                    <p class="game-stat-value" id="timerValue">00:00:00</p>
+                </article>
+                <article class="game-stat-card">
+                    <p class="game-stat-label" id="statusLabel">Status</p>
+                    <p class="game-stat-value game-stat-status" id="gameProgressState">Läuft</p>
+                </article>
+            </div>
 
             <p id="statusMessage"></p>
+            <div class="solved-celebration" id="solvedCelebration" aria-live="polite" hidden>
+                <p class="solved-celebration-title" id="solvedCelebrationTitle">Richtig gelöst!</p>
+                <p class="solved-celebration-text" id="solvedCelebrationText">Stark gemacht. Das Brett ist konfliktfrei.
+                </p>
+            </div>
+
             <div class="board" id="board"></div>
 
             <div class="controls">
-                <button class="btn" onclick="solve()">Solve</button>
-                <button class="btn" onclick="checkSolution()">Check</button>
-                <button class="btn secondary" onclick="resetBoard()">Reset</button>
-
-                <button class="btn" onclick="openSavePanel()">💾 Save</button>
-                <button class="btn" onclick="openSavePointsPanel()">📂 Load</button>
+                <button class="btn secondary" onclick="resetBoard()" id="btnReset" type="button">Brett
+                    zuruecksetzen</button>
+                <div class="controls-save-row">
+                    <button class="btn" onclick="openSavePanel()" id="btnSave" type="button">Speichern</button>
+                    <button class="btn secondary" onclick="openSavePointsPanel()" id="btnLoad"
+                        type="button">Save-Points</button>
                 </div>
             </div>
 
+            <div class="solver-panel">
+                <div class="solver-panel-header">
+                    <div>
+                        <p class="section-kicker" id="solverKicker">Solver</p>
+                        <h3 id="solverTitle">Lösungswerkzeuge</h3>
+                        <p class="solver-message" id="solverMessage">Bereite einen Ablauf vor und spiele ihn Schritt
+                            für Schritt ab.</p>
+                    </div>
+                    <p class="solver-step-info" id="solverStepInfo">Schritt 0 / 0</p>
+                </div>
+
+                <div class="solver-groups">
+                    <section class="solver-group">
+                        <h4 id="animationSolverTitle">Animations-Solver</h4>
+                        <p class="solver-group-text" id="animationSolverText">
+                            Bereite den Lösungsweg vor, gehe ihn manüll Schritt für Schritt durch oder spiele die
+                            Animation automatisch ab.
+                        </p>
+
+                        <div class="solver-controls">
+                            <button class="btn" onclick="prepareSolutionTrace()" id="btnPrepareSolve"
+                                type="button">Animation vorbereiten</button>
+                            <button class="btn secondary" onclick="nextSolverStep()" id="btnNextStep"
+                                type="button">Nächster Schritt</button>
+                            <button class="btn secondary" onclick="toggleSolverPlayback()" id="btnPlayPause"
+                                type="button">Animation abspielen</button>
+                        </div>
+
+                        <div class="solver-speed">
+                            <label class="solver-speed-label" id="solverSpeedLabel"
+                                for="solverSpeedInput">Animationsgeschwindigkeit</label>
+                            <input id="solverSpeedInput" type="range" min="80" max="900" step="20" value="320"
+                                oninput="updateSolverSpeed(this.value)">
+                            <span class="solver-speed-value" id="solverSpeedValue">320 ms</span>
+                        </div>
+                    </section>
+
+                    <section class="solver-group instant-solver-group">
+                        <h4 id="instantSolverTitle">Sofort-Lösung</h4>
+                        <p class="solver-group-text" id="instantSolverText">
+                            Lade direkt eine gültige Lösung, ohne Zwischenschritte oder Animation.
+                        </p>
+
+                        <div class="instant-solver-actions">
+                            <button class="btn accent" onclick="instantSolve()" id="btnInstantSolve"
+                                type="button">Sofort lösen</button>
+                        </div>
+                    </section>
+                </div>
+            </div>
+        </div>
+
+        <div class="card piece-card">
+            <div class="section-header">
+                <h3 id="pieceListTitle">Positionen der Damen</h3>
+                <span class="section-badge" id="pieceCountBadge">0 gesetzt</span>
+            </div>
+            <ul id="queenList"></ul>
+        </div>
+
         <div class="card">
-            <h3>📋 Figuren Positionen</h3>
-            <ul id="queenList"></ul>
+            <div class="history-header">
+                <div>
+                    <p class="section-kicker" id="historyKicker">Save-Points</p>
+                    <h3 id="historyTitle">Gespeicherte Zeiten und Fortschritte</h3>
+                    <p class="history-subtitle" id="historySubtitle">Die Tabelle zeigt gespeicherte Save-Points mit
+                        Zeit, Schritten und
+                        Status.</p>
+                </div>
+                <button class="btn secondary" onclick="refreshTimeHistory()" id="btnRefreshHistory"
+                    type="button">Aktualisieren</button>
+            </div>
+
+            <div class="history-table-wrapper">
+                <table class="history-table">
+                    <thead>
+                        <tr>
+                            <th id="historyHeadSave">Save-Point</th>
+                            <th id="historyHeadMode">Modus</th>
+                            <th id="historyHeadBoard">Brett</th>
+                            <th id="historyHeadSteps">Schritte</th>
+                            <th id="historyHeadTime">Zeit</th>
+                            <th id="historyHeadStatus">Status</th>
+                            <th id="historyHeadSaved">Gespeichert</th>
+                        </tr>
+                    </thead>
+                    <tbody id="timeHistoryTableBody">
+                        <tr>
+                            <td colspan="7" class="history-empty">Noch keine gespeicherten Zeiten vorhanden.</td>
+                        </tr>
+                    </tbody>
+                </table>
+            </div>
         </div>
     </div>
 
-    <aside class="sidebar" id="settingsSidebar" aria-hidden="true">
+    <aside class="sidebar settings-sidebar" id="settingsSidebar" aria-hidden="true">
         <div class="sidebar-header">
-            <h3>Brettgroesse</h3>
-            <button class="btn secondary sidebar-close" onclick="toggleSidebar(false)" type="button">Schliessen</button>
+            <h3 id="settingsSidebarTitle">Brett-Einstellungen</h3>
+            <button class="btn secondary sidebar-close" onclick="toggleSidebar(false)" id="settingsSidebarClose"
+                type="button">Schliessen</button>
         </div>
 
-        <p>Wähle eine Grösse zwischen 4 und 13.</p>
+        <p id="settingsSidebarText">Passe die Brettgrösse zwischen 4 und 13 an.</p>
 
-        <label class="sidebar-label" for="boardSizeInput">Groesse</label>
+        <label class="sidebar-label" id="boardSizeInputLabel" for="boardSizeInput">Grösse</label>
         <input id="boardSizeInput" type="range" min="4" max="13" value="8" oninput="previewBoardSize(this.value)">
         <div class="sidebar-size-row">
             <strong><span id="sidebarBoardSizeValue">8</span> x <span id="sidebarBoardSizeValueMirror">8</span></strong>
         </div>
 
-        <button class="btn" onclick="applyBoardSize()" type="button">Apply Size</button>
-        <p class="sidebar-hint">Das Brett wird beim Ändern zur Sicherheit zurückgesetzt.</p>
+        <button class="btn" onclick="applyBoardSize()" id="applyBoardSizeButton" type="button">Grösse anwenden</button>
+        <p class="sidebar-hint" id="settingsSidebarHint">Beim Ändern wird das Brett zur Sicherheit zurückgesetzt. Auf
+            dem Handy ist 8x8 eingeplant, grössere Bretter können abgeschnitten wirken.</p>
     </aside>
 
     <aside class="sidebar save-sidebar" id="saveSidebar" aria-hidden="true">
         <div class="sidebar-header">
-            <h3>Speicherpunkt</h3>
-            <button class="btn secondary sidebar-close" onclick="toggleSavePanel(false)" type="button">Schliessen</button>
+            <h3 id="saveSidebarTitle">Speicherpunkt</h3>
+            <button class="btn secondary sidebar-close" onclick="toggleSavePanel(false)" id="saveSidebarClose"
+                type="button">Schliessen</button>
         </div>
 
-        <p>Gib dem Spielstand einen klaren Namen und optional eine kurze Notiz.</p>
+        <p id="saveSidebarText">Gib dem Spielstand einen klaren Namen und optional eine kurze Notiz.</p>
 
-        <label class="sidebar-label" for="saveNameInput">Name</label>
-        <input class="sidebar-input" id="saveNameInput" type="text" maxlength="80" placeholder="z. B. Fast geloeste Dame 8x8">
+        <label class="sidebar-label" id="saveNameLabel" for="saveNameInput">Name</label>
+        <input class="sidebar-input" id="saveNameInput" type="text" maxlength="80"
+            placeholder="z. B. Fast gelöste Dame 8x8">
 
-        <label class="sidebar-label" for="saveNoteInput">Notiz</label>
+        <label class="sidebar-label" id="saveNoteLabel" for="saveNoteInput">Notiz</label>
         <textarea class="sidebar-input sidebar-textarea" id="saveNoteInput" rows="4" maxlength="240"
-            placeholder="z. B. Gute Startposition fuer Tuermetest"></textarea>
+            placeholder="z. B. Gute Startposition für Türmetest"></textarea>
 
         <label class="sidebar-checkbox">
             <input id="saveFavoriteInput" type="checkbox">
-            Als Favorit markieren
+            <span id="saveFavoriteLabel">Als Favorit markieren</span>
         </label>
 
-        <button class="btn" onclick="saveGame()" type="button">Jetzt speichern</button>
+        <button class="btn" onclick="saveGame()" id="saveNowButton" type="button">Jetzt speichern</button>
     </aside>
 
     <aside class="sidebar save-points-sidebar" id="savePointsSidebar" aria-hidden="true">
         <div class="sidebar-header">
-            <h3>Save Points</h3>
-            <button class="btn secondary sidebar-close" onclick="toggleSavePointsPanel(false)" type="button">Schliessen</button>
+            <h3 id="savePointsSidebarTitle">Save-Points</h3>
+            <button class="btn secondary sidebar-close" onclick="toggleSavePointsPanel(false)"
+                id="savePointsSidebarClose" type="button">Schliessen</button>
         </div>
 
-        <p>Waehle einen Speicherstand aus der Liste.</p>
+        <p id="savePointsSidebarText">Wähle einen Speicherstand aus der Liste.</p>
 
         <div class="save-point-filters">
-            <label class="sidebar-label" for="savePointModeFilter">Modus</label>
+            <label class="sidebar-label" id="savePointModeFilterLabel" for="savePointModeFilter">Modus</label>
             <select class="sidebar-input" id="savePointModeFilter" onchange="refreshSavePoints()">
                 <option value="all">Alle</option>
                 <option value="queens">Damen</option>
-                <option value="rooks">Tuerme</option>
+                <option value="rooks">Türme</option>
             </select>
 
-            <label class="sidebar-label" for="savePointSizeFilter">Brettgroesse</label>
+            <label class="sidebar-label" id="savePointSizeFilterLabel" for="savePointSizeFilter">Brettgrösse</label>
             <select class="sidebar-input" id="savePointSizeFilter" onchange="refreshSavePoints()">
                 <option value="all">Alle</option>
                 {% for board_size in range(4, 14) %}
@@ -147,22 +287,22 @@
                 {% endfor %}
             </select>
 
-            <label class="sidebar-label" for="savePointSortFilter">Sortierung</label>
+            <label class="sidebar-label" id="savePointSortFilterLabel" for="savePointSortFilter">Sortierung</label>
             <select class="sidebar-input" id="savePointSortFilter" onchange="refreshSavePoints()">
                 <option value="newest">Neueste zuerst</option>
-                <option value="oldest">Aelteste zuerst</option>
+                <option value="oldest">älteste zuerst</option>
                 <option value="updated">Zuletzt bearbeitet</option>
                 <option value="favorites">Favoriten zuerst</option>
             </select>
 
             <label class="sidebar-checkbox">
                 <input id="savePointFavoritesOnly" type="checkbox" onchange="refreshSavePoints()">
-                Nur Favoriten anzeigen
+                <span id="savePointFavoritesOnlyLabel">Nur Favoriten anzeigen</span>
             </label>
         </div>
 
         <div class="save-points-list" id="savePointsList">
-            <p class="sidebar-hint">Noch keine Speicherstaende gefunden.</p>
+            <p class="sidebar-hint" id="savePointsEmptyState">Noch keine Speicherstände gefunden.</p>
         </div>
     </aside>
 
@@ -170,8 +310,34 @@
     <div class="sidebar-backdrop" id="saveBackdrop" onclick="toggleSavePanel(false)"></div>
     <div class="sidebar-backdrop" id="savePointsBackdrop" onclick="toggleSavePointsPanel(false)"></div>
 
-    <script src="{{ url_for('static', filename='js/dashboard.js') }}"></script>
+    <div class="modal-backdrop" id="infoModalBackdrop" onclick="toggleInfoModal(false)"></div>
+    <section class="modal" id="infoModal" aria-hidden="true" aria-labelledby="infoModalTitle">
+        <div class="modal-header">
+            <h3 id="infoModalTitle">Spielregeln und Acht-Damen-Problem</h3>
+            <button class="btn secondary sidebar-close" onclick="toggleInfoModal(false)"
+                type="button">Schliessen</button>
+        </div>
 
+        <div class="modal-content">
+            <p>Setze pro Reihe genau eine Figur auf das Brett. Eine gültige Lösung hat keine Konflikte.</p>
+
+            <h4>So funktioniert der aktuelle Modus</h4>
+            <p id="infoModeRuleText">Im Damen-Modus dürfen sich Damen weder in derselben Spalte noch diagonal
+                angreifen. Mit einem Klick setzt oder entfernst du eine Figur.</p>
+
+            <h4 id="infoModalProblemHeading">Was ist das Acht-Damen-Problem?</h4>
+            <p id="infoModalProblemText">Das klassische Acht-Damen-Problem fragt nach einer Anordnung von acht Damen
+                auf einem 8x8-Brett, bei der sich keine zwei Damen schlagen. Es ist ein bekanntes Beispiel für
+                kombinatorische Suche und Backtracking.</p>
+
+            <h4>Was zeigen Zeit und Schritte?</h4>
+            <p>Der Schrittzähler erfasst deine Züge auf dem Brett. Die Zeit läuft für das aktuelle Spiel weiter,
+                auch wenn du die Seite neu lädst. Beim Speichern werden Zeit und Schritte zusammen mit dem
+                Save-Point abgelegt.</p>
+        </div>
+    </section>
+
+    <script src="{{ url_for('static', filename='js/dashboard.js') }}"></script>
 </body>
 
 </html>

app/templates/index.html

@@ -1,66 +1,193 @@
 <!DOCTYPE html>
-<html lang="en">
+<html lang="{{ initial_language }}">
 
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>{% block title %}Solver App{% endblock %}</title>
-
-    <!-- CSS -->
-    <link rel="stylesheet" href="{{ url_for('static', filename='css/style.css') }}">
-
-    {% block head_extra %}{% endblock %}
+    <title data-i18n="meta.title">8-Damen- und 8-Tuerme Solver</title>
+    <link rel="stylesheet" href="{{ url_for('static', filename='css/index.css') }}">
 </head>
 
 <body>
+    <header class="landing-nav">
+        <a class="brand" href="{{ url_for('main.home') }}">
+            <span class="brand-mark">♛</span>
+            <span data-i18n="nav.brand">8-Damen- und 8-Tuerme Solver</span>
+        </a>
 
-    <!-- Navigation -->
-    <header class="navbar">
-        <div class="container">
-            <h1 class="logo">SolverApp</h1>
-
-            <nav>
-                <a href="/">Home</a>
-                <a href="/dashboard">Solver</a>
-
-                {% if session.get('user_id') %}
-                <a href="/dashboard">Dashboard</a>
-                <a href="/logout">Logout</a>
-                {% else %}
-                <a href="{{ url_for('login.login') }}">Login</a>
-                {% endif %}
+        <nav class="landing-links">
+            <a href="#problem" data-i18n="nav.problem">Problem</a>
+            <a href="#features" data-i18n="nav.features">Features</a>
+            <a href="#journey" data-i18n="nav.journey">Ablauf</a>
+            <button class="lang-switch" id="langSwitch" type="button" aria-label="Sprache wechseln">DE</button>
+            <a class="nav-cta secondary" href="{{ url_for('login.login') }}" data-i18n="nav.login">Login</a>
+            <a class="nav-cta" href="{{ url_for('login.register') }}" data-i18n="nav.signup">Create Account</a>
         </nav>
-        </div>
     </header>
 
-    <!-- Flash messages -->
-    <main class="container">
-        {% with messages = get_flashed_messages(with_categories=true) %}
-        {% if messages %}
-        <div class="flash-container">
-            {% for category, message in messages %}
-            <div class="flash {{ category }}">
-                {{ message }}
-            </div>
-            {% endfor %}
-        </div>
-        {% endif %}
-        {% endwith %}
+    <main>
+        <section class="hero">
+            <div class="hero-copy">
+                <p class="eyebrow" data-i18n="hero.eyebrow">Interaktives Lernen mit Strategie, Logik und Backtracking
+                </p>
+                <h1 data-i18n="hero.title">Entdecke das Acht-Damen- und Acht-Türme-Problem.</h1>
+                <p class="hero-text" data-i18n="hero.text">
+                    Diese App macht aus einem klassischen Informatik- und Mathematikproblem ein interaktives Erlebnis:
+                    Setze Damen oder Türme, verfolge den Solver Schritt für Schritt, miss deine Zeit und speichere
+                    clevere Zwischenstände.
+                </p>
 
-        <!-- Page Content -->
-        {% block content %}{% endblock %}
+                <div class="hero-actions">
+                    <a class="hero-button primary" href="{{ url_for('login.register') }}"
+                        data-i18n="hero.primaryCta">Jetzt starten</a>
+                    <a class="hero-button secondary" href="{{ url_for('login.login') }}"
+                        data-i18n="hero.secondaryCta">Bereits Account? Login</a>
+                </div>
+
+                <div class="hero-facts">
+                    <article>
+                        <strong data-i18n="hero.fact1Title">Skalierbar</strong>
+                        <span data-i18n="hero.fact1Text">Brettgrösse flexibel anpassen</span>
+                    </article>
+                    <article>
+                        <strong data-i18n="hero.fact2Title">Schritt für Schritt</strong>
+                        <span data-i18n="hero.fact2Text">Solver mit Animation</span>
+                    </article>
+                    <article>
+                        <strong data-i18n="hero.fact3Title">Save-Points</strong>
+                        <span data-i18n="hero.fact3Text">Zeit und Fortschritt behalten</span>
+                    </article>
+                </div>
+            </div>
+
+            <div class="hero-visual">
+                <div class="board-showcase" id="heroBoard" aria-hidden="true"></div>
+                <div class="floating-card solver-card">
+                    <p class="floating-label" data-i18n="hero.solverLabel">Solver</p>
+                    <p class="floating-value" data-i18n="hero.solverValue">Backtracking live</p>
+                </div>
+                <div class="floating-card timer-card">
+                    <p class="floating-label" data-i18n="hero.challengeLabel">Challenge</p>
+                    <p class="floating-value" data-i18n="hero.challengeValue">Zeit und Schritte messen</p>
+                </div>
+            </div>
+        </section>
+
+        <section class="info-band" id="problem">
+            <div class="info-band-inner">
+                <p class="eyebrow" data-i18n="problem.eyebrow">Warum dieses Problem spannend ist</p>
+                <h2 data-i18n="problem.title">Die Acht-Damen- und Acht-Tuerme-Probleme sind mehr als Schachrätsel.</h2>
+                <p data-i18n="problem.text">
+                    Beim Acht-Damen-Problem suchst du eine Anordnung von acht Damen auf einem Schachbrett, sodass sich
+                    keine zwei Damen schlagen. Beim Acht-Türme-Problem gilt dieselbe Idee für Türme, nur mit
+                    einfacheren Konfliktregeln. Beide Aufgaben zeigen, wie Mustererkennung, systematische Suche und
+                    Backtracking funktionieren.
+                    <br><br>
+                    Gerade beim Damenproblem wird schnell sichtbar, warum Strategie wichtig ist: Es gibt unzählige
+                    mögliche Platzierungen, aber nur sehr wenige wirklich gültige Lösungen. Genau das macht diese
+                    App spannend, weil man nicht nur das Ergebnis sieht, sondern auch den Weg dorthin.
+                </p>
+            </div>
+        </section>
+
+        <section class="feature-section" id="features">
+            <div class="section-heading">
+                <p class="eyebrow" data-i18n="features.eyebrow">Was die Applikation bietet</p>
+                <h2 data-i18n="features.title">Von der Idee bis zur gelösten Stellung.</h2>
+            </div>
+
+            <div class="feature-grid">
+                <article class="feature-card">
+                    <span class="feature-icon">♟</span>
+                    <h3 data-i18n="features.card1Title">Interaktives Brett</h3>
+                    <p data-i18n="features.card1Text">Setze Damen oder Tuerme direkt auf dem Brett und prüfe, ob deine
+                        Anordnung konfliktfrei ist.</p>
+                </article>
+
+                <article class="feature-card">
+                    <span class="feature-icon">⚙</span>
+                    <h3 data-i18n="features.card2Title">Solver mit Animation</h3>
+                    <p data-i18n="features.card2Text">Beobachte den Lösungsweg Schritt für Schritt und verstehe, wie
+                        Backtracking arbeitet.</p>
+                </article>
+
+                <article class="feature-card">
+                    <span class="feature-icon">⏱</span>
+                    <h3 data-i18n="features.card3Title">Zeit und Schritte</h3>
+                    <p data-i18n="features.card3Text">Miss deinen Fortschritt während des Spiels und vergleiche
+                        unterschiedliche Versuche.</p>
+                </article>
+
+                <article class="feature-card">
+                    <span class="feature-icon">💾</span>
+                    <h3 data-i18n="features.card4Title">Save-Points</h3>
+                    <p data-i18n="features.card4Text">Speichere Zwischenstaende mit Notizen, Zeiten und Schrittzahl für
+                        späteres Weiterarbeiten.</p>
+                </article>
+
+                <article class="feature-card">
+                    <span class="feature-icon">▦</span>
+                    <h3 data-i18n="features.card5Title">Skalierbare Bretter</h3>
+                    <p data-i18n="features.card5Text">Passe die Brettgrösse an und erkunde die Probleme nicht nur auf
+                        dem klassischen 8x8-Brett.</p>
+                </article>
+            </div>
+        </section>
+
+        <section class="journey-section" id="journey">
+            <div class="section-heading">
+                <p class="eyebrow" data-i18n="journey.eyebrow">So funktioniert dein Einstieg</p>
+                <h2 data-i18n="journey.title">In wenigen Schritten vom ersten Besuch zur eigenen Lösung.</h2>
+            </div>
+
+            <div class="journey-grid">
+                <article class="journey-step">
+                    <span class="step-number">01</span>
+                    <h3 data-i18n="journey.step1Title">Account erstellen</h3>
+                    <p data-i18n="journey.step1Text">Registriere dich und erhalte Zugang zu Dashboard, Save-Points und
+                        deinem Fortschritt.</p>
+                </article>
+
+                <article class="journey-step">
+                    <span class="step-number">02</span>
+                    <h3 data-i18n="journey.step2Title">Spielmodus wählen</h3>
+                    <p data-i18n="journey.step2Text">Arbeite mit Damen oder Türmen und passe die Brettgrösse deinem Ziel
+                        an.</p>
+                </article>
+
+                <article class="journey-step">
+                    <span class="step-number">03</span>
+                    <h3 data-i18n="journey.step3Title">Lösen oder analysieren</h3>
+                    <p data-i18n="journey.step3Text">Teste eigene Ideen oder lass dir die Lösung visuell vom Solver
+                        lösen lassen, dabei wird 1:1
+                        gezeigt wie der Solver vorgeht.</p>
+                </article>
+            </div>
+        </section>
+
+        <section class="cta-section">
+            <div class="cta-panel">
+                <p class="eyebrow" data-i18n="cta.eyebrow">Bereit für den ersten Versuch?</p>
+                <h2 data-i18n="cta.title">Mach aus einem bekannten Problem ein sichtbares Lernerlebnis.</h2>
+                <p data-i18n="cta.text">
+                    Starte mit einem Account, speichere deine Zwischenstände und finde heraus, wie schnell du eine
+                    konfliktfreie Lösung erreichst.
+                </p>
+
+                <div class="hero-actions">
+                    <a class="hero-button primary" href="{{ url_for('login.register') }}"
+                        data-i18n="cta.primaryCta">Create Account</a>
+                    <a class="hero-button secondary" href="{{ url_for('login.login') }}"
+                        data-i18n="cta.secondaryCta">Login</a>
+                </div>
+            </div>
+        </section>
     </main>
 
-    <!-- Footer -->
-    <footer class="footer">
-        <div class="container">
-            <p>© {{ 2026 }} SolverApp</p>
-        </div>
-    </footer>
-
-    <!-- JS -->
-    <script src="{{ url_for('static', filename='js/main.js') }}"></script>
-    {% block scripts %}{% endblock %}
+    <script>
+        window.LANDING_INITIAL_LANGUAGE = "{{ initial_language }}";
+    </script>
+    <script src="{{ url_for('static', filename='js/index.js') }}"></script>
 </body>
 
 </html>

app/templates/login.html

@@ -9,8 +9,13 @@
 </head>
 
 <body>
-    <nav>
-        <ul>
+    <nav class="auth-nav">
+        <a class="brand" href="{{ url_for('main.home') }}">
+            <span class="brand-mark">♛</span>
+            <span>8-Damen- und 8-Tuerme Solver</span>
+        </a>
+
+        <ul class="nav-links">
             <li><a href="{{ url_for('login.login') }}">Login</a></li>
             <li><a href="{{ url_for('login.register') }}">Create account</a></li>
         </ul>

app/templates/login_settings.html

@@ -10,8 +10,13 @@
 </head>
 
 <body>
-    <nav>
-        <ul>
+    <nav class="auth-nav">
+        <a class="brand" href="{{ url_for('main.home') }}">
+            <span class="brand-mark">♛</span>
+            <span>8-Damen- und 8-Tuerme Solver</span>
+        </a>
+
+        <ul class="nav-links">
             <li><a href="{{ url_for('main.dashboard') }}">Dashboard</a></li>
             <li><a href="{{ url_for('login.login_settings') }}">Login settings</a></li>
         </ul>

app/templates/sign_up.html

@@ -9,8 +9,13 @@
 </head>
 
 <body>
-    <nav>
-        <ul>
+    <nav class="auth-nav">
+        <a class="brand" href="{{ url_for('main.home') }}">
+            <span class="brand-mark">♛</span>
+            <span>8-Damen- und 8-Tuerme Solver</span>
+        </a>
+
+        <ul class="nav-links">
             <li><a href="{{ url_for('login.login') }}">Login</a></li>
             <li><a href="{{ url_for('login.register') }}">Create account</a></li>
         </ul>

app/templates/two_factor_verify.html

@@ -9,8 +9,13 @@
 </head>
 
 <body>
-    <nav>
-        <ul>
+    <nav class="auth-nav">
+        <a class="brand" href="{{ url_for('main.home') }}">
+            <span class="brand-mark">♛</span>
+            <span>8-Damen- und 8-Tuerme Solver</span>
+        </a>
+
+        <ul class="nav-links">
             <li><a href="{{ url_for('login.login') }}">Login</a></li>
             <li><a href="{{ url_for('login.register') }}">Create account</a></li>
         </ul>

database_setup.sql

@@ -27,6 +27,9 @@ CREATE TABLE game_state (
     save_name VARCHAR(80) NOT NULL DEFAULT 'Unnamed Save',
     save_note TEXT NOT NULL DEFAULT '',
     is_favorite BOOLEAN NOT NULL DEFAULT 0,
+    step_count INTEGER NOT NULL DEFAULT 0,
+    elapsed_seconds INTEGER NOT NULL DEFAULT 0,
+    is_solved BOOLEAN NOT NULL DEFAULT 0,
     created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
     updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
 );