/* =========================================================================
   LITERA CAMPUS - TANGLED SOFT PURPLE & WHITE THEME
   Perpustakaan Sekolah & Portal Informasi Perguruan Tinggi Indonesia
   ========================================================================= */
:root {
    --purple-900: #3B0764;
    --purple-800: #581C87;
    --purple-700: #6B21A8;
    --purple-600: #7E22CE;
    --purple-500: #9333EA;
    --purple-400: #A855F7;
    --purple-200: #E9D5FF;
    --purple-100: #F3E8FF;
    --purple-50:  #FAF5FF;
    --gold-500:   #F59E0B;
    --gold-400:   #FBBF24;
    --gold-100:   #FEF3C7;
    --white:      #FFFFFF;
    --slate-800:  #1E293B;
    --slate-600:  #475569;
    --slate-200:  #E2E8F0;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Plus Jakarta Sans', 'Segoe UI', sans-serif;
    background-color: var(--purple-50);
    color: var(--slate-800);
    line-height: 1.6;
    background-image: 
        radial-gradient(circle at 12% 18%, rgba(245, 158, 11, 0.08) 0%, transparent 25%),
        radial-gradient(circle at 88% 12%, rgba(168, 85, 247, 0.12) 0%, transparent 30%),
        radial-gradient(circle at 80% 85%, rgba(251, 191, 36, 0.09) 0%, transparent 28%);
}

/* Floating Lantern Particles Decoration */
.lantern-glow {
    position: relative;
    overflow: hidden;
}
.lantern-glow::before {
    content: "✦";
    position: absolute;
    top: 18px;
    right: 40px;
    font-size: 24px;
    color: var(--gold-400);
    opacity: 0.7;
    animation: floatLantern 4s ease-in-out infinite;
}
@keyframes floatLantern {
    0%, 100% { transform: translateY(0px) scale(1); opacity: 0.65; }
    50% { transform: translateY(-10px) scale(1.15); opacity: 1; }
}

/* Navbar */
.navbar {
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(12px);
    border-bottom: 2px solid var(--purple-200);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(88, 28, 135, 0.06);
}
.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}
.nav-menu {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    list-style: none;
}
.nav-btn {
    background: transparent;
    border: none;
    padding: 0.55rem 0.95rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--purple-800);
    cursor: pointer;
    transition: all 0.25s ease;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}
.nav-btn:hover, .nav-btn.active {
    background: linear-gradient(135deg, var(--purple-600), var(--purple-500));
    color: var(--white);
    box-shadow: 0 4px 12px rgba(147, 51, 234, 0.28);
}

/* Hero Section Tangled Castle & Lanterns */
.hero {
    background: linear-gradient(135deg, #F3E8FF 0%, #FFFFFF 52%, #FAF5FF 100%);
    border-bottom: 1px solid var(--purple-200);
    padding: 3.2rem 1.5rem 2.8rem;
}
.hero-inner {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.35fr 0.85fr;
    gap: 2rem;
    align-items: center;
}
.badge-tangled {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--gold-100);
    color: #92400E;
    border: 1px solid var(--gold-400);
    padding: 0.35rem 0.95rem;
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 700;
    margin-bottom: 1rem;
}
.hero h1 {
    font-size: 2.35rem;
    color: var(--purple-900);
    line-height: 1.22;
    margin-bottom: 1rem;
}
.hero h1 span {
    color: var(--purple-600);
    text-decoration: underline decoration-amber-400;
}
.hero p {
    color: var(--slate-600);
    font-size: 1.02rem;
    margin-bottom: 1.5rem;
}

/* Search Bar Utama ala Universitas.id */
.search-box-wrapper {
    background: var(--white);
    padding: 0.75rem;
    border-radius: 18px;
    box-shadow: 0 10px 30px rgba(107, 33, 168, 0.12);
    border: 2px solid var(--purple-200);
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
}
.search-input {
    flex: 1;
    min-width: 220px;
    border: none;
    outline: none;
    padding: 0.75rem 1rem;
    font-size: 0.98rem;
    border-radius: 12px;
    background: var(--purple-50);
}
.filter-select {
    padding: 0.75rem 1rem;
    border-radius: 12px;
    border: 1px solid var(--purple-200);
    background: var(--white);
    color: var(--purple-900);
    font-weight: 600;
    outline: none;
}
.btn-primary {
    background: linear-gradient(135deg, var(--purple-700), var(--purple-500));
    color: var(--white);
    border: none;
    padding: 0.75rem 1.4rem;
    border-radius: 12px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(126, 34, 206, 0.35);
}
.btn-gold {
    background: linear-gradient(135deg, #F59E0B, #D97706);
    color: var(--white);
    border: none;
    padding: 0.65rem 1.2rem;
    border-radius: 12px;
    font-weight: 700;
    cursor: pointer;
}

/* Container & Cards */
.container {
    max-width: 1280px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}
.section-panel {
    display: none;
}
.section-panel.active {
    display: block;
    animation: fadeIn 0.35s ease;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.grid-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
    gap: 1.4rem;
}
.card {
    background: var(--white);
    border-radius: 20px;
    padding: 1.5rem;
    border: 1px solid var(--purple-200);
    box-shadow: 0 6px 20px rgba(88, 28, 135, 0.05);
    transition: all 0.25s ease;
}
.card:hover {
    transform: translateY(-4px);
    border-color: var(--purple-400);
    box-shadow: 0 12px 28px rgba(126, 34, 206, 0.12);
}

.tag {
    display: inline-block;
    padding: 0.25rem 0.7rem;
    border-radius: 8px;
    font-size: 0.78rem;
    font-weight: 700;
}
.tag-ptn { background: #F3E8FF; color: #6B21A8; }
.tag-pts { background: #FEF3C7; color: #B45309; }
.tag-ptk { background: #DCFCE7; color: #15803D; }
.tag-akred { background: #EDE9FE; color: #5B21B6; border: 1px solid #C4B5FD; }

/* Stats Bar */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-top: 1.5rem;
}
.stat-box {
    background: var(--white);
    padding: 1rem;
    border-radius: 16px;
    border: 1px solid var(--purple-200);
    text-align: center;
}
.stat-box h3 {
    color: var(--purple-700);
    font-size: 1.45rem;
}
.stat-box span {
    font-size: 0.82rem;
    color: var(--slate-600);
}

/* Table Jurusan & Keketatan */
.table-wrap {
    overflow-x: auto;
    margin-top: 1rem;
}
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}
th {
    background: var(--purple-100);
    color: var(--purple-900);
    text-align: left;
    padding: 0.75rem 1rem;
    font-weight: 700;
}
td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--purple-100);
}

/* Kalkulator Rasionalisasi SNBP & SNBT */
.calc-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.8rem;
}
.form-group {
    margin-bottom: 1rem;
}
.form-group label {
    display: block;
    font-weight: 700;
    color: var(--purple-900);
    margin-bottom: 0.4rem;
    font-size: 0.9rem;
}
.form-control {
    width: 100%;
    padding: 0.7rem 0.95rem;
    border-radius: 12px;
    border: 1.5px solid var(--purple-200);
    background: var(--purple-50);
    font-size: 0.95rem;
    outline: none;
}
.form-control:focus {
    border-color: var(--purple-500);
    background: var(--white);
}

/* Progress Circle / Bar Peluang */
.meter-bar {
    height: 18px;
    background: var(--purple-100);
    border-radius: 999px;
    overflow: hidden;
    margin: 0.8rem 0;
}
.meter-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--purple-500), var(--gold-500));
    transition: width 0.6s ease;
}

/* Quiz / Try Out Styling */
.quiz-option {
    display: block;
    padding: 0.8rem 1rem;
    margin-bottom: 0.6rem;
    border-radius: 12px;
    border: 1.5px solid var(--purple-200);
    background: var(--white);
    cursor: pointer;
    transition: all 0.2s;
}
.quiz-option:hover {
    background: var(--purple-50);
    border-color: var(--purple-500);
}
.quiz-option input {
    margin-right: 0.65rem;
    accent-color: var(--purple-600);
}

/* Modal Detail Kampus */
.modal-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(59, 7, 100, 0.55);
    backdrop-filter: blur(4px);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}
.modal-backdrop.open {
    display: flex;
}
.modal-card {
    background: var(--white);
    max-width: 920px;
    width: 100%;
    max-height: 88vh;
    overflow-y: auto;
    border-radius: 24px;
    padding: 2rem;
    border: 2px solid var(--purple-300);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
}

footer {
    background: var(--purple-900);
    color: var(--purple-100);
    text-align: center;
    padding: 2rem 1.5rem;
    margin-top: 4rem;
    border-top: 4px solid var(--gold-400);
}

@media (max-width: 860px) {
    .hero-inner, .calc-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}