/* =====================================================================
   EDUMAG BELAJAR - PREMIUM MOBILE-FIRST CSS
   Theme: "The Future of Thinking, The Sanctuary of Learning"
   Composition: 60% Clean Space, 30% Deep Navy, 10% Glowing Gold
   ===================================================================== */

:root {
    /* 60% Sanctuary - Ruang Bersih & Elegan */
    --bg-main: #f8fafc;
    --white: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.75); /* Efek Kaca Masa Depan */
    --border-soft: rgba(15, 23, 42, 0.06);
    
    /* 30% Future - Biru Kedalaman Kosmik */
    --navy-main: #0f172a;
    --navy-light: #1e293b;
    --navy-muted: #475569;
    --text-dark: #0f172a;
    --text-muted: #64748b;

    /* 10% Spark of Thinking - Emas Premium & Cahaya */
    --accent-yellow: #d4af37; /* Emas Premium */
    --accent-glow: rgba(212, 175, 55, 0.3); /* Cahaya Emas Pendar */
    --accent-light: #fef9e6;

    /* Shadows Khusus Edumag */
    --shadow-float: 0 10px 30px -10px rgba(15, 23, 42, 0.08);
    --shadow-glow: 0 4px 20px var(--accent-glow);
}

/* =====================================================================
   A. GLOBAL RESET (Ruang Tenang)
   ===================================================================== */
body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-main);
    color: var(--text-dark);
    -webkit-font-smoothing: antialiased;
    /* Memberikan tekstur sangat halus di background (opsional) */
    background-image: radial-gradient(var(--border-soft) 1px, transparent 1px);
    background-size: 24px 24px;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* =====================================================================
   B. STICKY NAVBAR (Floating Glass / Efek Melayang)
   ===================================================================== */
.sticky-header {
    background-color: var(--glass-bg);
    backdrop-filter: blur(12px); /* Kunci Futuristic: Kaca Buram */
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: 'Poppins', sans-serif;
    font-size: 1.3rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--navy-main);
    display: flex;
    align-items: center;
    gap: 8px;
}

.badge-siswa {
    background: transparent;
    color: var(--navy-main);
    padding: 6px 14px;
    border-radius: 99px;
    font-size: 0.75rem;
    font-weight: 700;
    border: 1px solid var(--border-soft);
    box-shadow: inset 0 2px 4px rgba(255,255,255,0.5);
}

.btn-logout {
    background: var(--bg-main);
    border: none;
    padding: 8px 16px;
    border-radius: 99px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--text-muted);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-logout:hover {
    color: #ef4444;
    background: #fee2e2;
}

/* =====================================================================
   C. HERO BANNER (Portal Pengetahuan)
   ===================================================================== */
.hero {
    /* Gradient Dalam yang Memberi Kesan "Future" */
    background: linear-gradient(145deg, var(--navy-main) 0%, #172442 100%);
    color: var(--white);
    padding: 40px 0;
    border-radius: 0 0 30px 30px; /* Sudut melengkung ekstrem, organik */
    box-shadow: 0 20px 40px -10px rgba(15, 23, 42, 0.2), 
                inset 0 -2px 0 var(--accent-yellow); /* Garis emas di ujung bawah */
    margin-bottom: 35px;
    position: relative;
    overflow: hidden;
}

/* Efek Cahaya Kosmik Emas di sudut Hero */
.hero::after {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 150px;
    height: 150px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    border-radius: 50%;
    opacity: 0.6;
}

.hero-title {
    font-family: 'Poppins', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0 0 10px 0;
    color: var(--white);
    line-height: 1.2;
    letter-spacing: -0.5px;
}

.hero-title span {
    color: var(--accent-yellow);
    text-shadow: 0 0 15px var(--accent-glow); /* Teks berpendar halus */
}

.hero-subtitle {
    font-size: 0.9rem;
    margin: 0;
    color: #cbd5e1;
    max-width: 90%;
    line-height: 1.6;
    font-weight: 400;
}

/* =====================================================================
   D. SECTIONS & TYPOGRAPHY
   ===================================================================== */
.explore-section {
    padding: 10px 0 60px 0;
}

.section-heading {
    margin-bottom: 25px;
    position: relative;
}

.section-title {
    margin: 0;
    font-family: 'Poppins', sans-serif;
    font-size: 1.15rem;
    font-weight: 700;
    display: block;
    line-height: 1.4;
    color: var(--navy-main);
    letter-spacing: -0.3px;
}

.section-title i {
    color: var(--accent-yellow);
    margin-right: 8px;
}

.section-subtitle {
    margin: 6px 0 0 0;
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.5;
}

.text-accent { color: var(--accent-yellow); }
.text-primary { color: var(--navy-main); }

/* =====================================================================
   E. MAPEL CAPSULES (Bukan Sekadar Kotak, Tapi "Kapsul Pikiran")
   ===================================================================== */
.mapel-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 30px;
}

.mapel-card {
    background: var(--white);
    border: 1px solid var(--white);
    border-radius: 20px; /* Bentuk kapsul futuristik */
    padding: 24px 12px;
    text-align: center;
    cursor: pointer;
    box-shadow: var(--shadow-float);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.mapel-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px -5px rgba(15, 23, 42, 0.1);
}

.mapel-card.active {
    background: var(--navy-main);
    border-color: var(--accent-yellow);
    box-shadow: var(--shadow-glow);
}

.mapel-card.active .mapel-text {
    color: var(--white);
}

.mapel-icon-box {
    width: 50px;
    height: 50px;
    border-radius: 16px; /* Squircle modern */
    background-color: var(--bg-main);
    color: var(--navy-main);
    font-size: 1.3rem;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 16px auto;
    transition: all 0.3s ease;
}

.mapel-card.active .mapel-icon-box {
    background-color: var(--accent-yellow);
    color: var(--navy-main);
    transform: scale(1.1); /* Ikon membesar lembut saat aktif */
}

.mapel-text {
    font-size: 0.8rem;
    font-weight: 700;
    margin: 0;
    color: var(--navy-muted);
    letter-spacing: 0.3px;
    text-transform: uppercase;
}

/* =====================================================================
   F. MATERI GRID & CARD (Modul Sanctum)
   ===================================================================== */
.materi-section-block {
    animation: slideUp 0.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.filter-input {
    width: 100%;
    box-sizing: border-box;
    padding: 14px 18px;
    border: none;
    background: var(--white);
    border-radius: 12px;
    font-size: 0.9rem;
    margin-top: 15px;
    outline: none;
    box-shadow: inset 0 2px 4px var(--border-soft), 0 2px 10px rgba(0,0,0,0.02);
    transition: all 0.3s ease;
    font-family: inherit;
    color: var(--navy-main);
}

.filter-input:focus {
    box-shadow: inset 0 0 0 2px var(--accent-yellow), var(--shadow-glow);
}

.grid-materi-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;
    margin-top: 25px;
}

.materi-card {
    background: var(--white);
    border: none;
    border-left: 4px solid var(--navy-main); /* Aksen tepi ala buku premium */
    border-radius: 16px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: var(--shadow-float);
    transition: transform 0.3s ease;
}

.materi-card:hover {
    transform: translateX(5px); /* Hover slide ke kanan, bukan ke atas */
    border-left-color: var(--accent-yellow);
}

.materi-tag-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.materi-badge-lbl {
    background: var(--accent-light);
    color: #a17f1a;
    padding: 6px 10px;
    border-radius: 8px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.materi-head-title {
    font-size: 1.05rem;
    font-weight: 700;
    margin: 0 0 20px 0;
    line-height: 1.5;
    color: var(--navy-main);
}

.btn-action-go {
    background-color: var(--navy-main); /* Deep focus color */
    color: var(--white);
    text-decoration: none;
    text-align: center;
    padding: 12px;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 600;
    border: 1px solid var(--navy-main);
    transition: all 0.3s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.btn-action-go:hover {
    background-color: var(--accent-yellow);
    border-color: var(--accent-yellow);
    color: var(--navy-main);
    box-shadow: var(--shadow-glow);
}

/* =====================================================================
   G. MODAL IFRAME (The Deep Dive Window)
   ===================================================================== */
.modal-materi-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(8px); /* Blur background saat membaca materi */
    -webkit-backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    justify-content: center;
    align-items: flex-end; /* Muncul dari bawah */
}

.modal-materi-content {
    background-color: var(--white);
    width: 100%;
    height: 94%;
    border-top-left-radius: 30px;
    border-top-right-radius: 30px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 -10px 40px rgba(0,0,0,0.2);
    animation: modalPopUp 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes modalPopUp {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
}

.modal-materi-header {
    background-color: var(--white);
    color: var(--navy-main);
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-soft);
}

#modal-materi-title {
    margin: 0;
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    color: var(--navy-main);
    max-width: 70%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.btn-close-materi {
    background-color: var(--bg-main);
    border: 1px solid var(--border-soft);
    color: var(--navy-muted);
    padding: 8px 14px;
    border-radius: 99px; /* Pill button shape */
    font-weight: 700;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-close-materi:hover {
    background-color: var(--navy-main);
    color: var(--white);
}

.modal-materi-body {
    flex: 1;
    background-color: #f1f5f9;
    position: relative;
}

.modal-materi-body iframe {
    width: 100%;
    height: 100%;
    position: absolute;
    border: none;
}

/* STATUS MESSAGE BOXES */
.loading-state-box, .status-msg-center {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--text-muted);
    padding: 40px 0;
    font-size: 0.9rem;
    font-weight: 500;
}

/* =====================================================================
   H. DESKTOP ADAPTIVE MEDIA QUERIES (LAYAR LEBAR > 768px)
   ===================================================================== */
@media (min-width: 768px) {
    body { background-size: 32px 32px; }
    .sticky-header { padding: 20px 0; }
    .logo { font-size: 1.5rem; }
    .hero { padding: 60px 0; border-radius: 0 0 40px 40px; }
    .hero-title { font-size: 2.6rem; }
    .hero-subtitle { font-size: 1.05rem; max-width: 60%; }
    
    .section-title { font-size: 1.5rem; }
    
    .mapel-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 20px;
    }
    .mapel-card { padding: 30px 16px; border-radius: 24px; }
    .mapel-icon-box { width: 60px; height: 60px; font-size: 1.5rem; border-radius: 20px; }
    .mapel-text { font-size: 0.85rem; }

    .grid-materi-container { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }
    .materi-card { padding: 24px; border-radius: 20px; border-left-width: 5px; }

    .modal-materi-overlay { align-items: center; padding: 20px; box-sizing: border-box; }
    .modal-materi-content {
        width: 100%;
        max-width: 1000px;
        height: 90vh;
        border-radius: 24px;
        animation: modalScaleUp 0.3s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    }
    
    @keyframes modalScaleUp {
        from { opacity: 0; transform: scale(0.95); }
        to { opacity: 1; transform: scale(1); }
    }
}

/* =====================================================================
   I. APP FOOTER
   ===================================================================== */
.footer {
    background-color: transparent;
    padding: 40px 0;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}
.footer p { margin: 0 0 6px 0; font-weight: 700; color: var(--navy-light); }

/* ================================================================
   EDUMAG BRAND SYSTEM V2 - STUDENT PORTAL
   Unified with Tutor / Admin visual DNA
   ================================================================ */
:root{
  --edumag-navy:#172033 !important;
  --edumag-yellow:#f6c744 !important;
  --edumag-coral:#f26b5e !important;
  --edumag-cream:#fff9ec !important;
  --edumag-white:#fff !important;
  --edumag-ink:#20232d !important;
  --edumag-muted:#667085 !important;
  --edumag-border:#e4dfd2 !important;
  --ed-bg:#fff9ec !important;
  --ed-ink:#20232d !important;
  --ed-muted:#667085 !important;
  --ed-purple:#172033 !important;
  --ed-blue:#3f86df !important;
  --ed-coral:#f26b5e !important;
  --ed-yellow:#f6c744 !important;
  --ed-mint:#dfeee8 !important;
  --ed-line:#e4dfd2 !important;
}
body{background:var(--edumag-cream)!important;color:var(--edumag-ink)!important}
.sticky-header{background:rgba(255,249,236,.94)!important;border-bottom:1px solid var(--edumag-border)!important;box-shadow:0 4px 18px rgba(23,32,51,.05)!important}
.logo{color:var(--edumag-navy)!important}
.logo::after{color:var(--edumag-coral)!important}
.badge-siswa{background:#fff7d6!important;color:var(--edumag-navy)!important;border:1px solid #ead98f!important;box-shadow:none!important}
.btn-logout{background:#fff!important;color:var(--edumag-muted)!important;border:1px solid var(--edumag-border)!important;box-shadow:none!important}
.btn-logout:hover{background:#fff3ef!important;color:var(--edumag-coral)!important}
.hero{background:linear-gradient(145deg,var(--edumag-navy) 0%,#202b44 100%)!important;border-bottom:3px solid var(--edumag-yellow)!important;box-shadow:0 16px 35px rgba(23,32,51,.14)!important}
.hero-title span{color:var(--edumag-yellow)!important;text-shadow:none!important}
.hero-subtitle{color:#d7dce6!important}
.catalog-kicker{color:var(--edumag-coral)!important}
.catalog-head h2,.catalog-group-head h3{color:var(--edumag-ink)!important}
.catalog-head p{color:var(--edumag-muted)!important}
.student-subject-card{border-color:var(--edumag-border)!important;box-shadow:4px 5px 0 #ebe5d9!important;background:#fff!important}
.student-subject-card:hover{box-shadow:6px 9px 0 #e3ddcf!important}
.student-subject-card.active{background:#fff7d6!important;border-color:#e3c65b!important;box-shadow:5px 7px 0 #eadb9d!important}
.student-subject-card.active strong{color:var(--edumag-navy)!important}
.student-subject-icon{background:#eef1f6!important;color:var(--edumag-navy)!important}
.student-subject-card:nth-child(2n) .student-subject-icon,.student-subject-card:nth-child(3n) .student-subject-icon,.student-subject-card:nth-child(4n) .student-subject-icon{background:#fff7d6!important;color:var(--edumag-navy)!important}
.catalog-search input{border-color:var(--edumag-border)!important;box-shadow:2px 3px 0 #eee9df!important;color:var(--edumag-ink)!important}
.catalog-search input:focus{border-color:var(--edumag-yellow)!important;box-shadow:3px 3px 0 #eadb9d!important}
.catalog-group{border-color:var(--edumag-border)!important;box-shadow:4px 5px 0 #ebe5d9!important}
.catalog-group-head span{background:#e9f4ee!important;color:#26704f!important}
.catalog-topic-card{border-left-color:var(--edumag-yellow)!important;background:#fffaf0!important}
.catalog-open{background:var(--edumag-navy)!important;border-color:var(--edumag-navy)!important;box-shadow:3px 3px 0 #d8d1b9!important}
.catalog-open:hover{background:var(--edumag-yellow)!important;color:var(--edumag-navy)!important}
.private-booking-entry{border-color:var(--edumag-navy)!important;background:#edf6f1!important;box-shadow:5px 6px 0 var(--edumag-coral),9px 10px 0 rgba(23,32,51,.08)!important}
.private-booking-entry .private-booking-btn{background:var(--edumag-navy)!important;border-color:var(--edumag-navy)!important;box-shadow:4px 4px 0 var(--edumag-yellow)!important}
.private-booking-entry .private-booking-btn:hover{background:var(--edumag-yellow)!important;color:var(--edumag-navy)!important}
.footer{color:var(--edumag-muted)!important}
.footer p{color:var(--edumag-navy)!important}
@media(max-width:600px){.student-subject-card{border-radius:14px!important;transform:none!important;box-shadow:3px 4px 0 #ebe5d9!important}.student-subject-card:hover{transform:translateY(-2px)!important}.hero{border-radius:0 0 28px 28px!important}}