:root {
    --primary: #1a4f8b;
    --primary-light: #2c6eb5;
    --secondary: #d4af37;
    --accent: #ffd700;
    --bg-light: #f8fafc;
    --text-dark: #1e293b;
    --text-muted: #64748b;
    --white: #ffffff;
    --glass: rgba(255, 255, 255, 0.8);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Sarabun', 'Inter', sans-serif;
}

body {
    background-color: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navbar */
nav {
    background: var(--white);
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo {
    height: 50px;
    width: auto;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links li {
    position: relative;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition);
}

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

/* Submenu */
.has-submenu {
    position: relative;
    cursor: pointer;
}

.submenu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    box-shadow: var(--shadow-lg);
    border-radius: 8px;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    padding: 1rem 0;
}

.has-submenu:hover .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.submenu li {
    list-style: none;
}

.submenu a {
    padding: 0.5rem 1.5rem;
    display: block;
}

.submenu a:hover {
    background: var(--bg-light);
}

/* Hero Section */
.hero {
    height: 80vh;
    background: linear-gradient(rgba(26, 79, 139, 0.8), rgba(26, 79, 139, 0.8)), url('https://images.unsplash.com/photo-1541339907198-e08756ebafe3?auto=format&fit=crop&q=80') center/cover;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    padding: 0 5%;
}

.hero-content {
    background: var(--glass);
    padding: 3rem;
    border-radius: 20px;
    backdrop-filter: blur(10px);
    color: var(--text-dark);
    max-width: 900px;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255,255,255,0.3);
    animation: fadeInDown 1s ease;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    color: var(--primary);
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto;
}

/* Dashboard Section */
.dashboard {
    padding: 5rem 5%;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.stat-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border-bottom: 4px solid var(--primary);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.stat-card h3 {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--primary);
}

/* Personnel Section */
.personnel-section {
    padding: 5rem 5%;
    background: var(--white);
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--primary);
}

/* Spary Menu (Tabs) */
.spary-menu {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 3rem;
}

.spary-item {
    padding: 0.8rem 1.5rem;
    background: var(--bg-light);
    border: 1px solid #e2e8f0;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
    color: var(--text-dark);
}

.spary-item:hover, .spary-item.active {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

/* Personnel Grid */
.personnel-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.person-card {
    background: var(--bg-light);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid #e2e8f0;
    animation: fadeIn 0.5s ease;
}

.person-card:hover {
    box-shadow: var(--shadow-md);
    transform: scale(1.02);
}

.person-img {
    height: 300px;
    background: #cbd5e1;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
    font-size: 3rem;
}

.person-info {
    padding: 1.5rem;
    text-align: center;
}

.person-name {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.person-pos {
    color: var(--primary);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Performance Link */
.performance-link-container {
    text-align: center;
    padding: 5rem 5%;
}

.btn-primary {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--primary);
    color: var(--white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 2.2rem; }
    .stat-number { font-size: 2.5rem; }
    .dashboard { grid-template-columns: 1fr; }
    .nav-links { display: none; }
}