html {
    scroll-behavior: smooth;
}

/* CSS Variables for Dark/Light Mode */
:root {
    /* Default Dark Mode */
    --bg-color: #121212;
    --surface-color: #1e1e1e;
    --text-main: #f5f5f5;
    --text-muted: #a0a0a0;
    --modrinth-green: #1bd96a;
    --modrinth-green-hover: #16b859;
    --surface-tint: linear-gradient(180deg, #121212 0%, #17241a 100%);
    --nav-bg: rgba(18, 18, 18, 0.95);
    --card-border: #333;
}

/* Light Mode Overrides */
.light-mode {
    --bg-color: #f9fafb;
    --surface-color: #ffffff;
    --text-main: #111827;
    --text-muted: #4b5563;
    --surface-tint: linear-gradient(180deg, #f9fafb 0%, #e8f5e9 100%);
    --nav-bg: rgba(255, 255, 255, 0.95);
    --card-border: #e5e7eb;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    transition: background-color 0.4s ease, color 0.4s ease;
}

/* Navigation Bar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background-color: var(--nav-bg);
    border-bottom: 1px solid var(--card-border);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.logo {
    font-weight: 800;
    font-size: 1.3rem;
    letter-spacing: 0.5px;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-main);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--modrinth-green);
}

.theme-btn {
    background: none;
    border: 1px solid var(--card-border);
    color: var(--text-main);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s;
}

.theme-btn:hover {
    background-color: var(--surface-color);
}

/* Hero Section */
.hero {
    min-height: 75vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem;
    animation: fadeIn 1s ease-out;
}

/* Reduced Icon Size */
.hero-icon {
    width: 100px; /* Shrunk from 120px */
    height: auto;
    margin-bottom: 1rem;
    filter: drop-shadow(0 4px 10px rgba(27, 217, 106, 0.3));
}

/* Gradient Text Effect */
.gradient-text {
    font-size: 3.5rem;
    margin-top: 0;
    margin-bottom: 1rem;
    background: linear-gradient(90deg, var(--modrinth-green), #00d2ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 2rem auto;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.modrinth-btn {
    background-color: var(--modrinth-green);
    color: #000;
}

.modrinth-btn:hover {
    background-color: var(--modrinth-green-hover);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(27, 217, 106, 0.2);
}

.btn-icon {
    height: 24px;
    width: auto;
}

/* Video Showcase */
.video-showcase {
    padding: 4rem 2rem;
    background: var(--surface-tint);
    border-top: 1px solid var(--card-border);
    border-bottom: 1px solid var(--card-border);
}

.showcase-content {
    max-width: 800px;
    text-align: center;
}

.showcase-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.showcase-content p {
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.video-wrapper {
    position: relative;
    width: 100%;
    max-width: 700px;
    padding-bottom: 39.375%;
    height: 0;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .video-wrapper {
        padding-bottom: 56.25%;
    }
    
    .hero-icon {
        width: 80px;
    }
    
    .gradient-text {
        font-size: 2.5rem;
    }
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Features Section */
.features {
    padding: 5rem 2rem;
    background-color: var(--surface-color);
    text-align: center;
}

.features h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.feature-grid {
    display: flex;
    justify-content: center;
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
    flex-wrap: wrap;
}

.feature-card {
    background-color: var(--bg-color);
    padding: 2rem;
    border-radius: 12px;
    flex: 1;
    min-width: 250px;
    border: 1px solid var(--card-border);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.color-card-1:hover {
    transform: translateY(-5px);
    border-color: #00d2ff;
}

.color-card-2:hover {
    transform: translateY(-5px);
    border-color: var(--modrinth-green);
}

.donation-section {
    max-width: 600px;
    margin: 5rem auto 0 auto;
    padding: 2rem;
    background: var(--surface-tint);
    border-radius: 12px;
    border: 1px solid var(--modrinth-green);
}

.donation-section h3 {
    font-size: 1.5rem;
    margin-top: 0;
    margin-bottom: 1.5rem;
}

.donation-box {
    background-color: #0a0a0a;
    border-radius: 8px;
    overflow: hidden;
}

footer {
    text-align: center;
    padding: 3rem 2rem;
    background-color: var(--bg-color);
    color: var(--text-muted);
    border-top: 1px solid var(--card-border);
}

.footer-links {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.footer-links a {
    color: var(--text-main);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--modrinth-green);
}

.footer-links .divider {
    margin: 0 15px;
    color: #444;
}

.reveal-hidden {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.reveal-visible {
    opacity: 1;
    transform: translateY(0);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}