:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --secondary: #ec4899;
    --accent: #10b981;
    --bg-light: #f8fafc;
    --card-bg: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius: 12px;
}

[data-theme="dark"] {
    --bg-light: #0f172a;
    --card-bg: #1e293b;
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Outfit', sans-serif;
    color: var(--text-main);
    background-color: var(--bg-light);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
    transition: 0.3s;
}

ul {
    list-style: none;
}

/* Navbar */
.main-nav {
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

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

/* Hero Section */
.hero {
    padding: 5rem 2rem;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.75rem;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    display: inline-block;
    transition: transform 0.2s;
}

.btn:active {
    transform: scale(0.95);
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}

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

/* Card System */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 4rem auto;
    padding: 0 2rem;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: 0.3s;
}

.card:hover {
    transform: translateY(-5px);
}

/* Footer */
.main-footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 4rem 2rem 1rem;
    margin-top: 5rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
}

/* Vibrant Square Social Icons (Image Match) */
.social-icons-square {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 1.5rem;
}
.sq-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    color: white;
    font-size: 1.5rem;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    transition: 0.3s;
}
.sq-icon:hover { transform: translateY(-3px); box-shadow: 0 8px 20px rgba(0,0,0,0.2); }
.sq-facebook { background: #1877F2; }
.sq-instagram { background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%); }
.sq-tiktok { background: #000; }
.sq-whatsapp { background: #25D366; }
.sq-youtube { background: #FF0000; }
.sq-twitter { background: #1DA1F2; }

/* Header adjustments */
.nav-preview { color: var(--primary); font-weight: 700; margin-right: 1rem; }