/* style.css */
:root {
    --primary-color: #0f2c59; /* Navy Blue */
    --secondary-color: #ffb000; /* Gold/Yellow */
    --text-color: #333;
    --light-bg: #f8f9fa;
}

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

body { color: var(--text-color); background-color: #fff; }

/* Top Bar */
.top-bar { background: var(--primary-color); color: #fff; padding: 5px 20px; font-size: 14px; display: flex; justify-content: space-between; }
.top-bar a { color: var(--secondary-color); text-decoration: none; }

/* Main Header */
.main-header { display: flex; align-items: center; justify-content: space-between; padding: 20px; background: #fff; border-bottom: 2px solid var(--secondary-color); }
.logo-area h1 { color: var(--primary-color); font-size: 28px; text-transform: uppercase; }
.logo-area p { color: #666; font-size: 14px; font-weight: bold; }

/* Navigation & Multi-level Menu */
.navbar { background: var(--primary-color); position: relative; z-index: 999; }
.nav-menu { list-style: none; display: flex; margin: 0; padding: 0; }
.nav-menu li { position: relative; }
.nav-menu a { display: block; color: #fff; text-decoration: none; padding: 15px 20px; transition: 0.3s; }
.nav-menu a:hover { background: var(--secondary-color); color: var(--primary-color); }

/* Dropdown Level 1 */
.nav-menu ul { position: absolute; left: 0; top: 100%; background: var(--primary-color); list-style: none; min-width: 200px; display: none; box-shadow: 0 4px 6px rgba(0,0,0,0.1); }
.nav-menu li:hover > ul { display: block; }
.nav-menu ul li { border-bottom: 1px solid rgba(255,255,255,0.1); }

/* Dropdown Level 2 (Multi-level) */
.nav-menu ul ul { left: 100%; top: 0; }

/* Mobile Menu Button */
.mobile-toggle { display: none; background: none; border: none; color: #fff; font-size: 24px; padding: 10px 20px; cursor: pointer; }

/* Main Content Area */
.hero-section { background: url('banner.jpg') center/cover; height: 400px; display: flex; align-items: center; justify-content: center; text-align: center; color: #fff; background-color: var(--primary-color); }
.hero-section h2 { font-size: 40px; text-shadow: 2px 2px 4px rgba(0,0,0,0.5); }
.content-wrapper { padding: 40px 20px; max-width: 1200px; margin: 0 auto; display: flex; gap: 20px; flex-wrap: wrap; }
.main-content { flex: 3; min-width: 300px; }
.notice-board { flex: 1; min-width: 250px; background: var(--light-bg); border: 1px solid #ddd; padding: 20px; box-shadow: 0 2px 4px rgba(0,0,0,0.05); }

/* Footer */
.site-footer { background: var(--primary-color); color: #fff; padding: 40px 20px 20px; margin-top: 40px; }
.footer-grid { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 20px; }
.footer-col { flex: 1; min-width: 250px; }
.footer-col h3 { border-bottom: 2px solid var(--secondary-color); padding-bottom: 10px; margin-bottom: 15px; }
.footer-bottom { text-align: center; padding-top: 20px; margin-top: 20px; border-top: 1px solid rgba(255,255,255,0.1); font-size: 14px; }

/* Responsive */
@media (max-width: 768px) {
    .mobile-toggle { display: block; }
    .nav-menu { flex-direction: column; display: none; }
    .nav-menu.active { display: flex; }
    .nav-menu ul { position: static; display: none; padding-left: 20px; }
    .nav-menu ul ul { position: static; }
    .top-bar { flex-direction: column; text-align: center; gap: 10px; }
    .main-header { text-align: center; flex-direction: column; gap: 15px; }
}