/* ===== Theme Variables ===== */
:root {
    --bg-gradient: linear-gradient(135deg, #1e1e2f, #2b2b45);
    --text-color: #ffffff;
    --card-bg: rgba(0, 0, 0, 0.35);
    --title-color: #ffd966;
    --hover-bg: rgba(255, 255, 255, 0.15);
}

body.light {
    --bg-gradient: linear-gradient(135deg, #f5f7fa, #dfe3ee);
    --text-color: #1e1e2f;
    --card-bg: rgba(255, 255, 255, 0.85);
    --title-color: #ff9800;
    --hover-bg: rgba(0, 0, 0, 0.08);
}

/* ===== Reset ===== */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: var(--bg-gradient);
    color: var(--text-color);
    overflow-x: hidden;
}

/* ===== Animations ===== */
@keyframes fadeSlide {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes float {
    0% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
    100% { transform: translateY(0); }
}

/* ===== Layout ===== */
.container {
    max-width: 900px;
    margin: auto;
    padding: 30px;
    animation: fadeSlide 1s ease;
}

/* ===== Logo ===== */
.logo {
    display: block;
    margin: 0 auto 20px;
    max-width: 280px;
    animation: fadeSlide 1.2s ease;
}

/* ===== Titles ===== */
h1 {
    text-align: center;
    font-size: 42px;
    margin-bottom: 10px;
    color: var(--title-color);
    animation: fadeSlide 1.3s ease;
}

h2 {
    margin-top: 25px;
    color: #6ecbff;
}

/* ===== Text ===== */
p, li {
    font-size: 18px;
    line-height: 1.6;
}

ul {
    margin-left: 20px;
}

/* ===== Cards ===== */
.box {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 12px;
    margin-top: 20px;
    animation: fadeSlide 1.4s ease;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.box:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.4);
}

/* ===== Game Buttons ===== */
.buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    margin-top: 10px;
}

.btn {
    padding: 12px 20px;
    border-radius: 10px;
    font-weight: bold;
    text-align: center;
    min-width: 120px;
    cursor: pointer;
    animation: float 3s ease-in-out infinite;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
    transform: scale(1.08);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.4);
}

.save { background-color: #4caf50; }
.load { background-color: #2196f3; }
.reset { background-color: #f44336; }

/* ===== Theme Toggle ===== */
.theme-toggle,
.lang-toggle {
    position: fixed;
    right: 20px;
    background: none;
    border: 2px solid currentColor;
    color: inherit;
    border-radius: 50px;
    cursor: pointer;
    transition: transform 0.2s, background 0.3s;
}

.theme-toggle {
    top: 20px;
    padding: 10px 14px;
    font-size: 16px;
}

.lang-toggle {
    top: 70px;
    padding: 8px 14px;
    font-size: 14px;
}

.theme-toggle:hover,
.lang-toggle:hover {
    transform: scale(1.08);
    background: var(--hover-bg);
}

/* ===== Footer ===== */
footer {
    text-align: center;
    margin-top: 40px;
    opacity: 0.7;
    font-size: 14px;
    animation: fadeSlide 1.6s ease;
}

/* ===== Responsive ===== */
@media (max-width: 600px) {
    h1 {
        font-size: 32px;
    }

    .logo {
        max-width: 200px;
    }
}