/* =====================================================
   Style Utama Website Sistem Informasi Kelas XII IPA 1
   Warna dominan: Biru, Putih, Abu-abu
   Desain: Modern, bersih, dengan aksen gradient & shadow halus
   ===================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root {
    --biru-utama: #2563eb;
    --biru-gelap: #1d4ed8;
    --biru-terang: #60a5fa;
    --biru-lembut: #eff4ff;
    --abu-terang: #f4f6fb;
    --abu-border: #e6e9f0;
    --abu-teks: #6b7280;
    --radius-besar: 16px;
    --radius-kecil: 10px;
    --shadow-lembut: 0 4px 16px rgba(37, 99, 235, 0.06);
    --shadow-sedang: 0 8px 24px rgba(37, 99, 235, 0.12);
}

* {
    box-sizing: border-box;
}

body {
    background-color: var(--abu-terang);
    font-family: 'Plus Jakarta Sans', 'Segoe UI', Arial, sans-serif;
    color: #1f2937;
    -webkit-font-smoothing: antialiased;
}

.content {
    animation: munculKonten 0.35s ease;
}

@keyframes munculKonten {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-thumb {
    background: #c7d2e8;
    border-radius: 10px;
}
::-webkit-scrollbar-track {
    background: transparent;
}

/* =====================================================
   HALAMAN LOGIN
   ===================================================== */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at top left, #3b82f6, #1e3a8a 65%);
    padding: 20px;
    position: relative;
    overflow: hidden;
}

.login-wrapper::before,
.login-wrapper::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
}

.login-wrapper::before {
    width: 320px;
    height: 320px;
    top: -80px;
    left: -80px;
}

.login-wrapper::after {
    width: 260px;
    height: 260px;
    bottom: -100px;
    right: -60px;
}

.login-card {
    background: #fff;
    border-radius: 20px;
    padding: 44px 40px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
    position: relative;
    z-index: 1;
    animation: munculLogin 0.4s ease;
}

@keyframes munculLogin {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

.login-card .icon-wrap {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    background: linear-gradient(135deg, var(--biru-utama), var(--biru-terang));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 14px;
    box-shadow: var(--shadow-sedang);
}

.login-card .icon-wrap i {
    font-size: 30px;
    color: #fff;
}

.login-card h3 {
    color: #111827;
    font-weight: 700;
}

.login-card .form-control {
    border-radius: var(--radius-kecil);
    padding: 10px 14px;
    border: 1.5px solid var(--abu-border);
}

.login-card .form-control:focus {
    border-color: var(--biru-utama);
    box-shadow: 0 0 0 4px var(--biru-lembut);
}

.login-card .btn-primary {
    background: linear-gradient(135deg, var(--biru-utama), var(--biru-gelap));
    border: none;
    border-radius: var(--radius-kecil);
    padding: 11px;
    font-weight: 600;
    letter-spacing: 0.3px;
    box-shadow: var(--shadow-sedang);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.login-card .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(37, 99, 235, 0.3);
}

/* =====================================================
   LAYOUT DASHBOARD
   ===================================================== */
.wrapper {
    display: flex;
    min-height: 100vh;
}

/* ---------- Sidebar (Desktop / Laptop) ---------- */
.sidebar {
    width: 260px;
    flex-shrink: 0;
    background: #ffffff;
    border-right: 1px solid var(--abu-border);
    min-height: 100vh;
    position: sticky;
    top: 0;
    display: flex;
    flex-direction: column;
    transition: left 0.3s ease;
}

.sidebar .brand {
    padding: 24px 22px;
    font-weight: 700;
    font-size: 18px;
    color: #111827;
    border-bottom: 1px solid var(--abu-border);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar .brand .brand-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--biru-utama), var(--biru-terang));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
    flex-shrink: 0;
}

.sidebar .nav {
    padding: 16px 12px;
    gap: 4px;
    flex: 1;
}

.sidebar .nav-link {
    color: #4b5563;
    padding: 11px 16px;
    border-radius: var(--radius-kecil);
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
    font-size: 14.5px;
    transition: all 0.18s ease;
    position: relative;
}

/* Badge Notifikasi Pesan Belum Dibaca di Menu Sidebar */
.badge-notif {
    margin-left: auto;
    background: #ef4444;
    color: #fff;
    font-size: 10.5px;
    font-weight: 700;
    min-width: 19px;
    height: 19px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 5px;
    box-shadow: 0 0 0 2px #fff;
}

.nav-link.active .badge-notif {
    background: #fff;
    color: var(--biru-gelap);
    box-shadow: none;
}

/* Badge Notifikasi Inline (di samping tombol "Diskusi" per baris tabel) */
.badge-notif-inline {
    position: absolute;
    top: -7px;
    right: -7px;
    background: #ef4444;
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    min-width: 17px;
    height: 17px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
    box-shadow: 0 0 0 2px #fff;
}

.sidebar .nav-link i {
    font-size: 17px;
    width: 20px;
    text-align: center;
}

.sidebar .nav-link:hover {
    background-color: var(--biru-lembut);
    color: var(--biru-gelap);
}

.sidebar .nav-link.active {
    background: linear-gradient(135deg, var(--biru-utama), var(--biru-gelap));
    color: #fff;
    box-shadow: var(--shadow-sedang);
}

.sidebar .nav-link.text-danger:hover {
    background-color: #fef2f2;
    color: #dc2626 !important;
}

/* Konten Utama */
.content {
    flex: 1;
    padding: 28px 32px;
    min-width: 0;
}

/* Header info di atas konten (nama user + role) */
.content .page-heading {
    background: #fff;
    border-radius: var(--radius-besar);
    padding: 18px 24px;
    box-shadow: var(--shadow-lembut);
    margin-bottom: 22px;
}

.badge.bg-primary {
    background: linear-gradient(135deg, var(--biru-utama), var(--biru-gelap)) !important;
    font-weight: 500;
    padding: 5px 10px;
    border-radius: 8px;
}

/* Topbar khusus Mobile (Hamburger di kanan atas) */
.topbar {
    display: none;
    background: #fff;
    padding: 14px 18px;
    border-bottom: 1px solid var(--abu-border);
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 1001;
    box-shadow: 0 2px 10px rgba(0,0,0,0.04);
}

.topbar .brand-mobile {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    color: #111827;
}

.topbar .brand-mobile .brand-icon {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--biru-utama), var(--biru-terang));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 15px;
}

#hamburgerBtn {
    border: none;
    background: var(--biru-lembut);
    color: var(--biru-gelap);
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    transition: all 0.15s ease;
}

#hamburgerBtn:hover,
#hamburgerBtn:active {
    background: var(--biru-utama);
    color: #fff;
}

/* Overlay gelap saat sidebar mobile terbuka */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
    z-index: 999;
}

.sidebar-overlay.show {
    display: block;
    animation: munculOverlay 0.2s ease;
}

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

/* =====================================================
   Banner Sambutan Dashboard (dengan Jam Live)
   ===================================================== */
.welcome-banner {
    background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 45%, #3b82f6 100%);
    border-radius: var(--radius-besar);
    padding: 28px 30px;
    margin-bottom: 22px;
    position: relative;
    overflow: hidden;
    color: #fff;
    box-shadow: var(--shadow-sedang);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 18px;
}

.welcome-banner::before {
    content: "";
    position: absolute;
    width: 240px;
    height: 240px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    top: -100px;
    right: -60px;
}

.welcome-banner::after {
    content: "";
    position: absolute;
    width: 160px;
    height: 160px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    bottom: -70px;
    right: 90px;
}

.welcome-banner .welcome-text {
    position: relative;
    z-index: 1;
}

.welcome-banner .welcome-text h4 {
    font-weight: 700;
    margin-bottom: 6px;
}

.welcome-banner .welcome-text p {
    margin-bottom: 0;
    opacity: 0.9;
    font-size: 14px;
}

/* Kotak Jam Live di dalam banner */
.live-clock {
    position: relative;
    z-index: 1;
    background: rgba(255, 255, 255, 0.14);
    backdrop-filter: blur(6px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: var(--radius-kecil);
    padding: 14px 24px;
    text-align: center;
    min-width: 200px;
}

.live-clock .jam-teks {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: 1px;
    font-variant-numeric: tabular-nums;
    line-height: 1.1;
}

.live-clock .jam-teks .titik-dua {
    animation: kedipTitikDua 1s steps(1) infinite;
}

@keyframes kedipTitikDua {
    50% { opacity: 0.25; }
}

.live-clock .tanggal-teks {
    font-size: 12.5px;
    opacity: 0.9;
    margin-top: 4px;
}

@media (max-width: 576px) {
    .welcome-banner {
        padding: 22px;
    }
    .live-clock {
        width: 100%;
        min-width: 0;
    }
    .live-clock .jam-teks {
        font-size: 24px;
    }
}

/* =====================================================
   Kartu Pengumuman / Papan Info
   ===================================================== */
.pengumuman-card {
    background: #fff;
    border-radius: var(--radius-kecil);
    border: 1px solid var(--abu-border);
    border-left: 4px solid var(--biru-utama);
    padding: 14px 18px;
    margin-bottom: 12px;
    transition: box-shadow 0.15s ease;
}

.pengumuman-card:hover {
    box-shadow: var(--shadow-lembut);
}

.pengumuman-card:last-child {
    margin-bottom: 0;
}

.pengumuman-card .pengumuman-judul {
    font-weight: 700;
    color: #111827;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.pengumuman-card .pengumuman-isi {
    color: #4b5563;
    font-size: 14px;
    margin-bottom: 8px;
    white-space: pre-line;
}

.pengumuman-card .pengumuman-meta {
    font-size: 12px;
    color: var(--abu-teks);
    display: flex;
    align-items: center;
    gap: 6px;
}

.badge-role-admin {
    background: #fee2e2;
    color: #b91c1c;
    font-size: 10.5px;
    padding: 2px 8px;
    border-radius: 20px;
    font-weight: 600;
}

.badge-role-guru {
    background: #dbeafe;
    color: #1d4ed8;
    font-size: 10.5px;
    padding: 2px 8px;
    border-radius: 20px;
    font-weight: 600;
}

/* =====================================================
   Progress Bar Statistik Siswa
   ===================================================== */
.progress-stat-card {
    background: #fff;
    border-radius: var(--radius-besar);
    padding: 22px;
    box-shadow: var(--shadow-lembut);
    border: 1px solid var(--abu-border);
}

.progress-stat-card .progress-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.progress-stat-card .progress-heading h6 {
    font-weight: 700;
    color: #111827;
    margin: 0;
}

.progress-stat-card .progress-angka {
    font-weight: 700;
    color: var(--biru-gelap);
    font-size: 15px;
}

.progress-track {
    width: 100%;
    height: 12px;
    background: var(--abu-terang);
    border-radius: 20px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    border-radius: 20px;
    background: linear-gradient(90deg, var(--biru-terang), var(--biru-utama));
    transition: width 0.6s ease;
}

.progress-stat-card .progress-ket {
    font-size: 12.5px;
    color: var(--abu-teks);
    margin-top: 8px;
}

/* Chip toggle "Tandai Selesai" pada tabel tugas siswa */
.btn-tandai-selesai {
    border-radius: 20px;
    font-size: 12.5px;
    padding: 5px 14px;
    font-weight: 600;
    border: 1.5px solid var(--abu-border);
    background: #fff;
    color: #4b5563;
}

.btn-tandai-selesai.sudah-selesai {
    background: #ecfdf5;
    border-color: #a7f3d0;
    color: #047857;
}

/* =====================================================
   Galeri Kegiatan Kelas
   ===================================================== */
.galeri-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 18px;
}

.galeri-item {
    background: #fff;
    border-radius: var(--radius-kecil);
    overflow: hidden;
    border: 1px solid var(--abu-border);
    box-shadow: var(--shadow-lembut);
    transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.galeri-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-sedang);
}

.galeri-item .galeri-foto-wrap {
    position: relative;
    width: 100%;
    padding-top: 70%;
    background: var(--abu-terang);
    overflow: hidden;
}

.galeri-item .galeri-foto-wrap img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    cursor: pointer;
    transition: transform 0.25s ease;
}

.galeri-item .galeri-foto-wrap:hover img {
    transform: scale(1.06);
}

.galeri-item .galeri-info {
    padding: 12px 14px;
}

.galeri-item .galeri-judul {
    font-weight: 700;
    font-size: 14.5px;
    color: #111827;
    margin-bottom: 3px;
}

.galeri-item .galeri-deskripsi {
    font-size: 12.5px;
    color: var(--abu-teks);
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.galeri-item .galeri-meta {
    font-size: 11px;
    color: #9ca3af;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Lightbox sederhana untuk melihat foto ukuran penuh (tanpa AJAX/JS library) */
.lightbox-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.85);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.lightbox-overlay.show {
    display: flex;
}

.lightbox-overlay img {
    max-width: 100%;
    max-height: 90vh;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.4);
}

.lightbox-close {
    position: absolute;
    top: 24px;
    right: 28px;
    color: #fff;
    font-size: 32px;
    cursor: pointer;
    line-height: 1;
}

/* Dropzone upload foto */
.upload-dropzone {
    border: 2px dashed var(--abu-border);
    border-radius: var(--radius-kecil);
    padding: 30px;
    text-align: center;
    color: var(--abu-teks);
    background: var(--abu-terang);
    transition: all 0.15s ease;
}

.upload-dropzone i {
    font-size: 34px;
    color: var(--biru-utama);
    margin-bottom: 8px;
    display: block;
}

/* =====================================================
   Kalender Akademik
   ===================================================== */
.kalender-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 10px;
}

.kalender-nav h5 {
    font-weight: 700;
    color: #111827;
    margin: 0;
}

.kalender-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 6px;
}

.kalender-grid .hari-label {
    text-align: center;
    font-weight: 700;
    font-size: 12px;
    color: var(--abu-teks);
    text-transform: uppercase;
    padding: 6px 0;
}

.kalender-sel {
    background: #fff;
    border: 1px solid var(--abu-border);
    border-radius: 10px;
    min-height: 110px;
    padding: 6px;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.kalender-sel.kosong {
    background: transparent;
    border: none;
}

.kalender-sel.hari-ini {
    border: 2px solid var(--biru-utama);
    background: var(--biru-lembut);
}

.kalender-sel .tanggal-angka {
    font-weight: 700;
    font-size: 13px;
    color: #374151;
    margin-bottom: 2px;
}

.kalender-sel.hari-ini .tanggal-angka {
    color: var(--biru-gelap);
}

.kalender-chip {
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 6px;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chip-jadwal {
    background: #eff4ff;
    color: #1d4ed8;
}

.chip-tugas {
    background: #fef3c7;
    color: #92400e;
}

.chip-kelompok {
    background: #ecfdf5;
    color: #047857;
}

.kalender-legenda {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 14px;
    font-size: 12.5px;
    color: var(--abu-teks);
}

.kalender-legenda span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.kalender-legenda .titik {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}

@media (max-width: 768px) {
    .kalender-grid {
        grid-template-columns: repeat(7, minmax(0, 1fr));
        gap: 3px;
    }
    .kalender-sel {
        min-height: 70px;
        padding: 4px;
        font-size: 11px;
    }
    .kalender-sel .tanggal-angka {
        font-size: 11px;
    }
    .kalender-chip {
        font-size: 8.5px;
        padding: 1px 4px;
    }
}

/* =====================================================
   Daftar Materi Pelajaran
   ===================================================== */
.materi-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.materi-item {
    display: flex;
    align-items: center;
    gap: 16px;
    background: #fff;
    border: 1px solid var(--abu-border);
    border-radius: var(--radius-kecil);
    padding: 14px 16px;
    transition: box-shadow 0.15s ease, transform 0.15s ease;
}

.materi-item:hover {
    box-shadow: var(--shadow-lembut);
    transform: translateY(-2px);
}

.materi-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}

.materi-info {
    flex: 1;
    min-width: 0;
}

.materi-judul {
    font-weight: 700;
    color: #111827;
    font-size: 15px;
    margin-bottom: 4px;
}

.materi-meta {
    font-size: 12px;
    color: var(--abu-teks);
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.materi-deskripsi {
    font-size: 13px;
    color: #4b5563;
    margin-top: 5px;
}

.materi-aksi {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
}

@media (max-width: 576px) {
    .materi-item {
        flex-wrap: wrap;
    }
    .materi-aksi {
        width: 100%;
        justify-content: flex-end;
        margin-top: 8px;
    }
}

/* =====================================================
   Kartu Grafik Statistik (Halaman Admin > Statistik)
   ===================================================== */
.chart-card {
    height: 100%;
}

.chart-card h6 {
    font-weight: 700;
    color: #111827;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.chart-box-wrap {
    position: relative;
    height: 260px;
}

/* =====================================================
   Ruang Chat / Diskusi Tugas
   ===================================================== */
.chat-wrapper {
    display: flex;
    flex-direction: column;
}

.chat-box {
    background: var(--abu-terang);
    border-radius: var(--radius-kecil);
    padding: 18px;
    max-height: 480px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.chat-bubble-wrap {
    display: flex;
    margin-bottom: 8px;
}

.chat-bubble-wrap.chat-kanan {
    justify-content: flex-end;
}

.chat-bubble-wrap.chat-kiri {
    justify-content: flex-start;
}

.chat-bubble {
    max-width: 75%;
    padding: 10px 14px;
    border-radius: 14px;
    font-size: 14.5px;
    line-height: 1.45;
    box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}

.chat-bubble-saya {
    background: linear-gradient(135deg, var(--biru-utama), var(--biru-gelap));
    color: #fff;
    border-bottom-right-radius: 4px;
}

.chat-bubble-lain {
    background: #fff;
    color: #1f2937;
    border: 1px solid var(--abu-border);
    border-bottom-left-radius: 4px;
}

.chat-nama {
    font-weight: 700;
    font-size: 12.5px;
    color: var(--biru-gelap);
    margin-bottom: 3px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.chat-bubble-lain .chat-role {
    background: var(--biru-lembut);
    color: var(--biru-gelap);
    font-size: 10px;
    font-weight: 600;
    padding: 1px 7px;
    border-radius: 20px;
}

.chat-isi {
    word-break: break-word;
    white-space: pre-line;
}

.chat-waktu {
    font-size: 10.5px;
    margin-top: 5px;
    opacity: 0.75;
    text-align: right;
}

.chat-bubble-saya .chat-waktu {
    color: rgba(255,255,255,0.85);
}

.chat-form .form-control {
    border-radius: 20px 0 0 20px;
}

.chat-form .btn {
    border-radius: 0 20px 20px 0;
}

@media (max-width: 576px) {
    .chat-bubble {
        max-width: 88%;
    }
    .chat-box {
        max-height: 400px;
        padding: 12px;
    }
}

/* Kartu Statistik Dashboard */
.stat-card {
    background: #fff;
    border-radius: var(--radius-besar);
    padding: 22px;
    box-shadow: var(--shadow-lembut);
    border: 1px solid var(--abu-border);
    display: flex;
    align-items: center;
    gap: 16px;
    transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-sedang);
}

.stat-card .stat-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--biru-utama), var(--biru-terang));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 22px;
    flex-shrink: 0;
}

.stat-card h2 {
    font-weight: 700;
    color: #111827;
    margin-bottom: 2px;
    font-size: 26px;
}

.stat-card p {
    color: var(--abu-teks);
    margin-bottom: 0;
    font-size: 13.5px;
}

/* Tabel / Wadah Konten */
.table-wrapper {
    background: #fff;
    border-radius: var(--radius-besar);
    padding: 24px;
    box-shadow: var(--shadow-lembut);
    border: 1px solid var(--abu-border);
}

.table-wrapper h5 {
    font-weight: 700;
    color: #111827;
}

.table thead {
    background-color: var(--abu-terang);
}

.table thead th {
    border-bottom: none;
    color: #374151;
    font-weight: 600;
    font-size: 13.5px;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    padding: 12px 14px;
}

.table tbody td {
    padding: 13px 14px;
    vertical-align: middle;
    font-size: 14.5px;
    border-color: var(--abu-border);
}

.table tbody tr {
    transition: background 0.15s ease;
}

.table-hover tbody tr:hover {
    background-color: var(--biru-lembut);
}

/* Tombol */
.btn {
    border-radius: var(--radius-kecil);
    font-weight: 500;
}

.btn-primary {
    background: linear-gradient(135deg, var(--biru-utama), var(--biru-gelap));
    border: none;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.35);
    transform: translateY(-1px);
}

.btn-outline-primary,
.btn-outline-danger,
.btn-outline-secondary {
    border-width: 1.5px;
}

/* Form */
.form-control, .form-select {
    border-radius: var(--radius-kecil);
    border: 1.5px solid var(--abu-border);
    padding: 9px 13px;
}

.form-control:focus, .form-select:focus {
    border-color: var(--biru-utama);
    box-shadow: 0 0 0 4px var(--biru-lembut);
}

.form-label {
    font-weight: 600;
    font-size: 14px;
    color: #374151;
}

/* Alert */
.alert {
    border-radius: var(--radius-kecil);
    border: none;
}

.alert-success {
    background-color: #ecfdf5;
    color: #047857;
}

.alert-danger {
    background-color: #fef2f2;
    color: #b91c1c;
}

.alert-primary {
    background-color: var(--biru-lembut);
    color: var(--biru-gelap);
}

/* =====================================================
   RESPONSIVE
   Laptop / Desktop (>768px): Sidebar tetap terlihat
   Handphone / Tablet kecil (<=768px): Sidebar disembunyikan,
   Topbar dengan tombol hamburger tampil di pojok kanan atas
   ===================================================== */
@media (min-width: 769px) {
    .sidebar {
        left: 0 !important;
    }
}

@media (max-width: 768px) {
    .wrapper {
        flex-direction: column;
    }

    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        height: 100vh;
        width: 78%;
        max-width: 280px;
        transform: translateX(-105%);
        z-index: 1000;
        box-shadow: 4px 0 24px rgba(0,0,0,0.18);
    }

    .sidebar.show {
        transform: translateX(0);
    }

    .topbar {
        display: flex;
    }

    .content {
        padding: 18px;
    }

    .stat-card {
        padding: 16px;
    }

    .table-wrapper {
        padding: 16px;
        border-radius: 14px;
    }

    .login-card {
        padding: 32px 24px;
    }
}