/* ==========================================
   1. GENERAL STYLES & RESET
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f8fafc;
    color: #334155;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ==========================================
   2. HEADER & NAVIGATION
   ========================================== */
.header {
    background-color: #4338ca;
    color: #ffffff;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
}

.logo span {
    color: #facc15;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 20px;
    list-style: none;
}

.nav-links a:hover {
    color: #facc15;
}

/* Dropdown Menu */
.dropdown {
    position: relative;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #ffffff;
    color: #1e293b;
    min-width: 250px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    padding: 10px 0;
}

.dropdown:hover .dropdown-menu {
    display: block;
}

.dropdown-menu a {
    display: block;
    padding: 8px 16px;
    font-size: 0.9rem;
}

.dropdown-menu a:hover {
    background-color: #f1f5f9;
    color: #4338ca;
}

.dropdown-header {
    font-weight: bold;
    color: #4338ca;
    padding: 8px 16px 4px;
    font-size: 0.85rem;
}

/* Coming Soon Badge */
.badge-sem2 {
    background-color: #3730a3;
    border: 1px solid rgba(250, 204, 21, 0.4);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 6px;
}

.badge-tag {
    background-color: #facc15;
    color: #0f172a;
    font-size: 0.65rem;
    font-weight: 800;
    padding: 2px 6px;
    border-radius: 4px;
}

/* ==========================================
   3. HERO SECTION
   ========================================== */
.hero {
    background-color: #4f46e5;
    color: #ffffff;
    text-align: center;
    padding: 50px 20px;
}

.hero h1 {
    font-size: 2.2rem;
    margin-bottom: 10px;
}

.hero p {
    color: #e0e7ff;
    margin-bottom: 24px;
}

.search-box {
    max-width: 550px;
    margin: 0 auto;
    display: flex;
    background: #ffffff;
    border-radius: 8px;
    overflow: hidden;
    padding: 4px;
}

.search-box input {
    width: 100%;
    border: none;
    padding: 10px 16px;
    outline: none;
    font-size: 0.95rem;
}

.search-box button {
    background-color: #facc15;
    color: #1e1b4b;
    border: none;
    padding: 10px 20px;
    font-weight: bold;
    cursor: pointer;
    border-radius: 6px;
}

.search-box button:hover {
    background-color: #eab308;
}

/* ==========================================
   4. MAIN CONTENT & CARDS
   ========================================== */
.container {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
    flex-grow: 1;
}

.section-title {
    font-size: 1.4rem;
    border-left: 4px solid #4338ca;
    padding-left: 10px;
    margin-bottom: 24px;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 50px;
}

.card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: bold;
    padding: 4px 8px;
    border-radius: 4px;
    margin-bottom: 10px;
}

.tag-vac { background: #dbeafe; color: #1e40af; }
.tag-sec { background: #f3e8ff; color: #6b21a8; }
.tag-dsc { background: #d1fae5; color: #065f46; }

.card h3 {
    font-size: 1.15rem;
    margin-bottom: 8px;
    color: #0f172a;
}

.card p {
    font-size: 0.875rem;
    color: #64748b;
    margin-bottom: 16px;
}

.card-link {
    color: #4338ca;
    font-weight: bold;
    font-size: 0.875rem;
}

/* ==========================================
   5. SEMESTER 2 COMING SOON SECTION
   ========================================== */
.coming-soon-box {
    background: linear-gradient(to right, #fffbeb, #fff7ed);
    border: 1px solid #fed7aa;
    border-radius: 16px;
    padding: 30px;
    text-align: center;
}

.cs-badge {
    background: #ffedd5;
    color: #9a3412;
    font-size: 0.75rem;
    font-weight: bold;
    padding: 4px 12px;
    border-radius: 20px;
    display: inline-block;
    margin-bottom: 12px;
}

.coming-soon-box h2 {
    color: #0f172a;
    font-size: 1.6rem;
    margin-bottom: 10px;
}

.coming-soon-box p {
    color: #64748b;
    max-width: 600px;
    margin: 0 auto 20px;
    font-size: 0.95rem;
}

.subject-pills {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
}

.pill {
    background: #ffffff;
    border: 1px solid #cbd5e1;
    font-size: 0.8rem;
    padding: 6px 12px;
    border-radius: 6px;
}

/* ==========================================
   6. FOOTER
   ========================================== */
.footer {
    background-color: #0f172a;
    color: #94a3b8;
    padding: 40px 20px 20px;
    margin-top: auto;
}

.footer-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 20px;
}

.footer h4 {
    color: #ffffff;
    margin-bottom: 12px;
}

.footer ul {
    list-style: none;
}

.footer li {
    margin-bottom: 6px;
}

.footer a:hover {
    color: #ffffff;
}

.copyright {
    text-align: center;
    font-size: 0.75rem;
    border-top: 1px solid #1e293b;
    padding-top: 16px;
}