:root {
    --bg-dark: radial-gradient(ellipse at top, #0a0a0a, #000000);
    --bg-light: #f5f5f5;
    --card-dark: rgba(20, 20, 20, 0.4);
    --card-light: rgba(255, 255, 255, 0.8);
    --text-dark: #ffffff;
    --text-light: #111;
    --accent: #ff1a1a;
}

body {
    font-family: 'Orbitron', sans-serif;
    background: var(--bg-dark);
    color: var(--text-dark);
    padding: 50px 20px;
    transition: all 0.4s ease;
}

.light-mode {
    background: var(--bg-light);
    color: var(--text-light);
}

.container {
    max-width: 1000px;
    margin: auto;
    background: var(--card-dark);
    backdrop-filter: blur(14px);
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 0 25px #ff1a1a44;
    transition: background 0.4s ease, box-shadow 0.4s ease;
}

.light-mode .container {
    background: var(--card-light);
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1,
h2 {
    color: var(--accent);
    text-shadow: 0 0 12px var(--accent);
    margin-top: 30px;
    border-bottom: 2px solid #ff1a1a99;
    padding-bottom: 8px;
}

p,
li {
    font-size: 15px;
    margin-top: 10px;
    line-height: 1.7;
}

ul {
    margin-left: 20px;
}

.warning {
    background: linear-gradient(45deg, #300000, #4d0000);
    border-left: 4px solid var(--accent);
    padding: 15px 20px;
    margin-top: 25px;
    border-radius: 10px;
    color: #ff4d4d;
    font-weight: bold;
    box-shadow: 0 0 12px #ff1a1a55;
}

a {
    color: var(--accent);
    text-decoration: underline;
}

.footer {
    margin-top: 40px;
    text-align: center;
    font-size: 13px;
    opacity: 0.7;
}

.toggle-btn {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: var(--accent);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 50px;
    font-size: 14px;
    cursor: pointer;
    box-shadow: 0 0 12px #ff1a1a77;
    z-index: 999;
    transition: all 0.3s ease;
}

.toggle-btn:hover {
    transform: scale(1.05);
    background-color: #ff0000;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(60px);
    }

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

.container {
    animation: fadeInUp 1.3s ease-out;
}