/* =========================================
   EVPC System Index - Glassboard 3D Theme
   ========================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;800&family=Orbitron:wght@700&display=swap');

:root {
    --glass-bg: rgba(255, 255, 255, 0.65);
    --glass-border: rgba(255, 255, 255, 0.8);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
    --glass-highlight: inset 0 1px 2px rgba(255, 255, 255, 0.9);
    
    --text-main: #1a1e24;
    --text-muted: #4a5568;
    --accent: #2b6cb0;
    
    --blur-intensity: blur(16px) saturate(180%);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    color: var(--text-main);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: linear-gradient(135deg, #e2e8f0 0%, #edf2f7 50%, #cbd5e1 100%);
    background-size: 400% 400%;
    animation: gradientFlow 15s ease infinite;
    overflow-x: hidden;
}

@keyframes gradientFlow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* --- Navigation --- */
nav {
    position: sticky; top: 20px; z-index: 1000;
    max-width: 800px; margin: 0 auto 2rem auto;
    display: flex; justify-content: center; gap: 2rem;
    padding: 1rem 2.5rem; border-radius: 50px;
    background: var(--glass-bg); backdrop-filter: var(--blur-intensity);
    -webkit-backdrop-filter: var(--blur-intensity);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow), var(--glass-highlight);
}

nav a {
    text-decoration: none; color: var(--text-main); font-weight: 600;
    font-size: 0.95rem; padding: 0.5rem 1rem; border-radius: 20px; transition: all 0.3s ease;
}

nav a:hover {
    background: rgba(255, 255, 255, 0.9); color: var(--accent);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05); transform: translateY(-1px);
}

/* --- Main Content Wrapper --- */
.content-wrapper {
    flex: 1; max-width: 1200px; margin: 0 auto;
    padding: 2rem; display: flex; flex-direction: column; gap: 3rem;
}

/* --- Header --- */
header {
    text-align: center; padding: 3rem 2rem; border-radius: 24px;
    background: var(--glass-bg); backdrop-filter: var(--blur-intensity);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow), var(--glass-highlight);
}

header h1 {
    font-weight: 800; color: var(--text-main);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.05);
    margin-bottom: 0.5rem; font-size: 3.5rem; letter-spacing: 4px;
}

header h2 {
    font-weight: 400; color: var(--text-muted);
    font-size: 1.5rem; letter-spacing: 2px;
}

/* --- Hero Section --- */
.hero-container { display: flex; justify-content: center; align-items: center; width: 100%; }

.banner-wrapper {
    width: 100%; max-width: 900px; border-radius: 24px; overflow: hidden; padding: 1rem;
    background: var(--glass-bg); backdrop-filter: var(--blur-intensity);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow), var(--glass-highlight);
}

.hero-img {
    width: 100%; height: auto; border-radius: 16px; display: block;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1); transition: transform 0.5s ease;
}

.hero-img:hover { transform: scale(1.01); }

/* --- Info Grid & Cards --- */
.info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); gap: 2rem; }

.info-card {
    padding: 2.5rem; border-radius: 24px; background: var(--glass-bg);
    backdrop-filter: var(--blur-intensity); border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow), var(--glass-highlight);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative; overflow: hidden;
}

.info-card::before {
    content: ''; position: absolute; top: 0; left: -100%; width: 50%; height: 100%;
    background: linear-gradient(to right, rgba(255,255,255,0) 0%, rgba(255,255,255,0.4) 50%, rgba(255,255,255,0) 100%);
    transform: skewX(-25deg); transition: all 0.6s ease;
}

.info-card:hover::before { left: 200%; }

.info-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15), var(--glass-highlight);
    border-color: rgba(255, 255, 255, 0.9);
}

.info-card h3 {
    font-size: 1.5rem; margin-bottom: 1rem; color: var(--text-main);
    border-bottom: 2px solid rgba(0,0,0,0.05); padding-bottom: 0.5rem;
}

.info-card p { color: var(--text-muted); font-size: 1.05rem; text-align: justify; }
.info-card strong { color: var(--accent); }

/* --- Footer --- */
.site-footer {
    text-align: center; padding: 1.5rem; margin-top: 4rem; color: var(--text-muted);
    font-size: 0.9rem; background: var(--glass-bg); backdrop-filter: var(--blur-intensity);
    border-top: 1px solid var(--glass-border);
}

/* --- Responsive Design --- */
@media (max-width: 768px) {
    nav { flex-wrap: wrap; border-radius: 16px; padding: 1rem; width: 90%; gap: 1rem; }
    header h1 { font-size: 2.5rem !important; letter-spacing: 3px !important; }
    header h2 { font-size: 1.2rem !important; letter-spacing: 1px !important; }
    .info-grid { grid-template-columns: 1fr; }
}