:root {
    --primary-bg-color: #f4f6f8;
    --secondary-bg-color: white;
    --nav-bg-color: #333;
}

@font-face {
    font-family: "Geist Sans";
    src: url("https://assets.codepen.io/605876/GeistVF.ttf") format("truetype");
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    display: grid;
    place-items: center;
    font-family: "Geist Sans", system-ui, sans-serif;

    background: linear-gradient(135deg, #c6dff4, #7c8384);
}


nav {
    width: 100%;
    background: var(--nav-bg-color);
    padding: 15px 30px;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: flex-end;
    gap: 20px;
}

nav a {
    color: white;
    text-decoration: none;
    font-size: 16px;
}

nav a:hover {
    color: #4facfe;
}

/* Center login section */
main {
    min-height: calc(100vh - 60px);
    /* full screen minus navbar */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

/* Title */
main h1 {
    margin-bottom: 20px;
}

main {
    animation: fadeIn 0.8s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(15px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}


/* Form box */
form {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(12px);
    padding: 35px;
    border-radius: 12px;
    width: 320px;
    display: flex;
    flex-direction: column;

    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.2);
}


/* Labels */
label {
    margin-top: 10px;
    margin-bottom: 5px;
    font-size: 14px;
}

/* Inputs */
form {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(12px);
    padding: 35px;
    border-radius: 12px;
    width: 320px;
    display: flex;
    flex-direction: column;

    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.2);
}


/* Button */
button {
    margin-top: 20px;
    padding: 12px;
    border: none;
    background: linear-gradient(135deg, #e9eff5, #daebf0);
    color: rgb(0, 0, 0);
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;

    transition: all 0.2s ease;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.2);
}

button:active {
    transform: scale(0.97);
}


/* Error message */
.error {
    color: red;
    margin-bottom: 15px;
}

/* button anim */