/* Reset & Base */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #1a3a6b;
    --primary-dark: #0f2548;
    --secondary: #f5c518;
    --accent-green: #2e8b57;
    --accent-red: #c41e3a;
    --accent-blue: #2563eb;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --radius: 12px;
    --radius-lg: 20px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    color: var(--text-dark);
    background: var(--bg-light);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.header {
    background: var(--bg-white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
}

.logo-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    width: 48px;
    height: 48px;
    object-fit: contain;
}

.logo-text h1 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.2;
}

.logo-text p {
    font-size: 0.8rem;
    color: var(--text-light);
    font-weight: 400;
}

/* Hero Section */
.hero {
    position: relative;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--accent-blue) 100%);
    padding: 100px 24px 120px;
    text-align: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(245, 197, 24, 0.05) 0%, transparent 50%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="p" patternUnits="userSpaceOnUse" width="20" height="20"><circle cx="10" cy="10" r="1" fill="rgba(255,255,255,0.03)"/></pattern></defs><rect fill="url(%23p)" width="100" height="100"/></svg>');
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-logo {
    width: 120px;
    height: 120px;
    object-fit: contain;
    margin-bottom: 24px;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.3));
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.hero h2 {
    font-size: 1.1rem;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 8px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 8px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: 1.3rem;
    font-weight: 500;
    color: var(--secondary);
    margin-bottom: 16px;
}

.hero-tagline {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.8);
    max-width: 600px;
    margin: 0 auto;
    font-weight: 300;
}

/* Links Section */
.links-section {
    padding: 80px 24px;
    background: var(--bg-light);
}

.section-title {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.section-desc {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 48px;
    font-size: 1.05rem;
}

.links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
    max-width: 800px;
    margin: 0 auto;
}

.link-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    text-align: center;
    text-decoration: none;
    color: var(--text-dark);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.link-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary), var(--accent-blue));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.link-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-blue);
}

.link-card:hover::before {
    transform: scaleX(1);
}

.link-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent-blue));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    color: #ffffff;
    transition: transform 0.3s ease;
}

.link-card:hover .link-icon {
    transform: scale(1.1);
}

.link-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--primary);
}

.link-card p {
    font-size: 0.95rem;
    color: var(--text-light);
    margin-bottom: 16px;
    line-height: 1.5;
}

.link-url {
    display: inline-block;
    font-size: 0.85rem;
    color: var(--accent-blue);
    background: rgba(37, 99, 235, 0.08);
    padding: 6px 16px;
    border-radius: 20px;
    font-weight: 500;
}

/* Info Section */
.info-section {
    padding: 60px 24px 80px;
    background: var(--bg-white);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.info-card {
    text-align: center;
    padding: 32px 24px;
    border-radius: var(--radius);
    transition: all 0.3s ease;
}

.info-card:hover {
    background: var(--bg-light);
}

.info-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(26, 58, 107, 0.1), rgba(37, 99, 235, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    color: var(--primary);
}

.info-card h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 8px;
}

.info-card p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* Footer */
.footer {
    background: var(--primary-dark);
    color: #ffffff;
    padding: 32px 24px;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-logo {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.footer-brand h4 {
    font-size: 1rem;
    font-weight: 600;
}

.footer-brand p {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.7);
}

.footer-copy {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
}

/* VIVA Logo & Meaning */
.viva-logo-wrapper {
    width: 56px;
    height: 56px;
    background: #ffffff;
    border: 2px solid rgba(37, 99, 235, 0.15);
    padding: 4px;
}

.viva-logo {
    width: 40px;
    height: 40px;
    object-fit: contain;
    border-radius: 50%;
}

.viva-meaning {
    list-style: none;
    text-align: left;
    margin: 0 auto 12px;
    max-width: 260px;
    padding: 12px 16px;
    background: linear-gradient(135deg, rgba(26, 58, 107, 0.03), rgba(37, 99, 235, 0.05));
    border-radius: 8px;
}

.viva-meaning li {
    font-size: 0.82rem;
    color: var(--text-dark);
    padding: 4px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

.viva-meaning li:last-child {
    border-bottom: none;
}

.viva-meaning li strong {
    color: var(--accent-blue);
    font-size: 0.92rem;
}

.viva-meaning li span {
    color: var(--text-light);
    font-size: 0.78rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero {
        padding: 60px 24px 80px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-logo {
        width: 90px;
        height: 90px;
    }

    .links-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .link-card {
        padding: 32px 24px;
    }

    .section-title {
        font-size: 1.6rem;
    }

    .info-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.6rem;
    }

    .hero h2 {
        font-size: 0.9rem;
    }

    .logo-text h1 {
        font-size: 1rem;
    }
}