/* ==========================================================================
   CBT YATINDO - STYLESHEET
   Desain Responsif, Modern, Bersih & Standar Ujian ANBK / Pusmendik
   ========================================================================== */

:root {
    --primary: #1e3a8a;          /* Navy Blue khas Yatindo */
    --primary-hover: #1e40af;
    --primary-light: #eff6ff;
    --secondary: #0d9488;        /* Teal */
    --dark: #0f172a;             /* Dark Slate */
    --text-main: #1e293b;
    --text-muted: #64748b;
    --bg-page: #f1f5f9;
    --bg-card: #ffffff;
    --border-color: #cbd5e1;
    --border-light: #e2e8f0;
    
    /* Status Colors */
    --success: #16a34a;
    --success-bg: #dcfce7;
    --warning: #f59e0b;
    --warning-bg: #fef3c7;
    --danger: #dc2626;
    --danger-bg: #fee2e2;

    /* Fonts & Radii */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.12);
}

/* Proteksi Teks: Dilarang seleksi teks selama ujian */
.no-select {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    -webkit-touch-callout: none;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-page);
    color: var(--text-main);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ==========================================================================
   1. LAYAR LOGIN / INTRO UJIAN
   ========================================================================== */
.login-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
}

.login-card {
    background: #ffffff;
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 40px rgba(0,0,0,0.25);
    max-width: 580px;
    width: 100%;
    overflow: hidden;
    animation: fadeInScale 0.3s ease-out;
}

.login-header {
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
    color: #ffffff;
    padding: 24px;
    text-align: center;
}

.login-header .badge-tag {
    display: inline-block;
    background: rgba(255,255,255,0.2);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: 8px;
    text-transform: uppercase;
}

.login-header h1 {
    font-size: 22px;
    font-weight: 800;
    margin-bottom: 4px;
}

.login-header p {
    font-size: 13px;
    opacity: 0.9;
}

.login-body {
    padding: 28px 24px;
}

.rules-box {
    background: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 24px;
}

.rules-box h3 {
    font-size: 14px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.rules-list {
    list-style: none;
    font-size: 12.5px;
    color: #475569;
}

.rules-list li {
    margin-bottom: 8px;
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.rules-list li .icon {
    flex-shrink: 0;
    margin-top: 2px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 12.5px;
    font-weight: 600;
    margin-bottom: 6px;
    color: #334155;
}

.form-input {
    width: 100%;
    padding: 12px 14px;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.15);
}

.btn-start-exam {
    width: 100%;
    padding: 14px;
    background: #16a34a;
    color: #ffffff;
    border: none;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: background-color 0.2s, transform 0.1s;
    box-shadow: 0 4px 10px rgba(22, 163, 74, 0.3);
}

.btn-start-exam:hover {
    background: #15803d;
}

.btn-start-exam:active {
    transform: scale(0.99);
}

/* ==========================================================================
   2. APP CONTAINER UJIAN
   ========================================================================== */
.exam-app {
    display: none; /* Muncul saat ujian dimulai */
    flex-direction: column;
    height: 100vh;
    max-height: 100vh;
    overflow: hidden;
}

/* Header Ujian */
.exam-navbar {
    background: #ffffff;
    border-bottom: 1px solid var(--border-color);
    padding: 10px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
    z-index: 10;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-badge {
    background: var(--primary);
    color: #ffffff;
    font-size: 12px;
    font-weight: 800;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    letter-spacing: 0.5px;
}

.brand-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--dark);
    line-height: 1.2;
}

.brand-sub {
    font-size: 11px;
    color: var(--text-muted);
}

.navbar-center {
    display: flex;
    align-items: center;
    gap: 16px;
}

.timer-pill {
    background: #f8fafc;
    border: 1.5px solid var(--border-color);
    padding: 6px 14px;
    border-radius: 30px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 700;
    color: var(--dark);
}

.timer-pill.urgent {
    background: var(--danger-bg);
    border-color: var(--danger);
    color: var(--danger);
    animation: pulseRed 1s infinite;
}

.autosave-pill {
    font-size: 11px;
    color: var(--success);
    background: var(--success-bg);
    padding: 4px 10px;
    border-radius: 20px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
}

.navbar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.student-tag {
    text-align: right;
}

.student-name {
    font-size: 13px;
    font-weight: 700;
    color: var(--dark);
}

.student-id {
    font-size: 11px;
    color: var(--text-muted);
}

.btn-grid-toggle {
    display: none; /* Muncul di mobile */
    background: var(--primary-light);
    color: var(--primary);
    border: 1px solid #bfdbfe;
    padding: 7px 12px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
}

/* ==========================================================================
   3. EXAM MAIN LAYOUT (2 KOLOM DI LAPTOP)
   ========================================================================== */
.exam-layout {
    display: flex;
    flex: 1;
    overflow: hidden;
    height: calc(100vh - 65px);
}

/* Area Soal (Kiri) */
.exam-question-area {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.question-card {
    background: #ffffff;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    padding: 24px;
    margin-bottom: 20px;
}

.question-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 14px;
    margin-bottom: 18px;
}

.question-meta {
    display: flex;
    align-items: center;
    gap: 10px;
}

.badge-qnum {
    background: var(--primary);
    color: #ffffff;
    font-size: 14px;
    font-weight: 800;
    padding: 4px 12px;
    border-radius: var(--radius-sm);
}

.badge-qtype {
    background: var(--primary-light);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
}

.font-size-ctrls {
    display: flex;
    align-items: center;
    gap: 4px;
}

.btn-font-size {
    background: #f1f5f9;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 4px 8px;
    font-size: 11px;
    font-weight: 700;
    cursor: pointer;
}

.btn-font-size:hover {
    background: #e2e8f0;
}

/* Teks & Konten Soal */
.question-body {
    font-size: 15px;
    color: #1e293b;
    margin-bottom: 24px;
    line-height: 1.7;
}

.question-body.font-small { font-size: 13.5px; }
.question-body.font-large { font-size: 17px; }

/* Opsi Pilihan Jawaban */
.answers-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.answer-option {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    background: #ffffff;
    cursor: pointer;
    transition: all 0.15s ease;
}

.answer-option:hover {
    border-color: var(--primary);
    background: var(--primary-light);
}

.answer-option.selected {
    border-color: var(--primary);
    background: #eff6ff;
    box-shadow: 0 0 0 1px var(--primary);
}

.option-badge {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1.5px solid var(--border-color);
    background: #ffffff;
    color: var(--dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 13px;
    flex-shrink: 0;
    transition: all 0.15s ease;
}

.answer-option.selected .option-badge {
    background: var(--primary);
    border-color: var(--primary);
    color: #ffffff;
}

.option-text {
    font-size: 14.5px;
    color: var(--text-main);
    flex: 1;
}

/* Navigasi Bawah Ujian */
.exam-navigation-bar {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    box-shadow: var(--shadow-sm);
    margin-top: auto;
}

.btn-nav {
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    border: 1px solid transparent;
    transition: all 0.15s;
}

.btn-nav-prev {
    background: #f1f5f9;
    color: var(--text-main);
    border-color: var(--border-color);
}

.btn-nav-prev:hover {
    background: #e2e8f0;
}

.btn-nav-doubt {
    background: var(--warning-bg);
    color: #92400e;
    border-color: #fcd34d;
}

.btn-nav-doubt:hover {
    background: #fde68a;
}

.btn-nav-doubt.active {
    background: #f59e0b;
    color: #ffffff;
    border-color: #f59e0b;
}

.btn-nav-next {
    background: var(--primary);
    color: #ffffff;
}

.btn-nav-next:hover {
    background: var(--primary-hover);
}

.btn-nav-finish {
    background: var(--success);
    color: #ffffff;
}

.btn-nav-finish:hover {
    background: #15803d;
}

/* ==========================================================================
   4. SIDEBAR / DRAWER NOMOR SOAL (Kanan di Laptop)
   ========================================================================== */
.exam-sidebar {
    width: 320px;
    background: #ffffff;
    border-left: 1px solid var(--border-color);
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    overflow-y: auto;
}

.sidebar-header {
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sidebar-header h3 {
    font-size: 14px;
    font-weight: 700;
    color: var(--dark);
}

.legend-box {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border-light);
    font-size: 11px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.legend-dot {
    width: 12px;
    height: 12px;
    border-radius: 3px;
}

.legend-dot.answered { background: var(--success); }
.legend-dot.doubt { background: var(--warning); }
.legend-dot.unanswered { background: #e2e8f0; border: 1px solid #cbd5e1; }

.question-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
    margin-bottom: 20px;
}

.q-grid-btn {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: #f8fafc;
    color: var(--text-main);
    cursor: pointer;
    transition: all 0.1s;
    position: relative;
}

.q-grid-btn:hover {
    border-color: var(--primary);
    transform: translateY(-1px);
}

.q-grid-btn.current {
    box-shadow: 0 0 0 2px var(--primary);
    font-weight: 800;
}

.q-grid-btn.answered {
    background: var(--success);
    color: #ffffff;
    border-color: var(--success);
}

.q-grid-btn.doubt {
    background: var(--warning);
    color: #ffffff;
    border-color: var(--warning);
}

/* ==========================================================================
   5. OVERLAY PERINGATAN & PENGUNCI KEAMANAN (ANTI-CHEAT)
   ========================================================================== */

/* Tirai Pembeku / Blur Layar jika Ujian Kehilangan Fokus */
.security-blur-curtain {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    background: rgba(15, 23, 42, 0.85);
    z-index: 9998;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

/* Modal Peringatan / Terkunci */
.security-modal {
    background: #ffffff;
    border-radius: var(--radius-lg);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    max-width: 480px;
    width: 100%;
    overflow: hidden;
    text-align: center;
    animation: modalPop 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.security-modal.strike-danger {
    border-top: 6px solid var(--danger);
}

.security-modal.strike-warning {
    border-top: 6px solid var(--warning);
}

.modal-header-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    margin: 24px auto 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
}

.modal-header-icon.warning {
    background: var(--warning-bg);
    color: var(--warning);
}

.modal-header-icon.danger {
    background: var(--danger-bg);
    color: var(--danger);
}

.modal-content-area {
    padding: 0 24px 24px;
}

.modal-title {
    font-size: 20px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 8px;
}

.modal-desc {
    font-size: 13.5px;
    color: #475569;
    line-height: 1.5;
    margin-bottom: 20px;
}

.strike-pills-wrap {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 20px;
}

.strike-pill {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    background: #f1f5f9;
    color: #94a3b8;
    border: 1px solid var(--border-color);
}

.strike-pill.violated {
    background: var(--danger);
    color: #ffffff;
    border-color: var(--danger);
}

.countdown-box {
    background: #f8fafc;
    border: 1px solid var(--border-color);
    padding: 10px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 18px;
}

.countdown-box span {
    font-weight: 800;
    color: var(--danger);
}

.btn-resume-exam {
    width: 100%;
    padding: 12px;
    background: var(--primary);
    color: #ffffff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.15s;
}

.btn-resume-exam:disabled {
    background: #94a3b8;
    cursor: not-allowed;
}

/* Form Buka Kunci Pengawas (Untuk Strike 3) */
.supervisor-unlock-box {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-light);
    display: none;
}

.supervisor-unlock-box.show {
    display: block;
}

.supervisor-pin-input {
    width: 100%;
    padding: 12px;
    text-align: center;
    font-size: 18px;
    font-weight: 800;
    letter-spacing: 4px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    margin-bottom: 10px;
}

.supervisor-pin-input:focus {
    border-color: var(--danger);
    outline: none;
}

.btn-supervisor-unlock {
    width: 100%;
    padding: 12px;
    background: var(--danger);
    color: #ffffff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 13.5px;
    font-weight: 700;
    cursor: pointer;
}

/* ==========================================================================
   6. FLOATING TESTING TOOLBAR (UNTUK UJI COBA DI LAPTOP & HP)
   ========================================================================== */
.dev-toolbar {
    position: fixed;
    bottom: 12px;
    right: 12px;
    background: #1e293b;
    color: #ffffff;
    border-radius: var(--radius-md);
    padding: 10px 14px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.4);
    z-index: 99999;
    font-size: 11.5px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-width: 320px;
    border: 1px solid rgba(255,255,255,0.15);
    transition: all 0.2s ease;
}

.dev-toolbar.minimized .dev-content {
    display: none;
}

.dev-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    cursor: pointer;
}

.dev-header h4 {
    font-size: 11px;
    font-weight: 700;
    color: #38bdf8;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.dev-status-row {
    display: flex;
    gap: 10px;
    margin-top: 4px;
    font-size: 11px;
}

.dev-badge {
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 700;
}

.dev-badge.green { background: #15803d; color: #ffffff; }
.dev-badge.red { background: #b91c1c; color: #ffffff; }

.dev-log-box {
    max-height: 80px;
    overflow-y: auto;
    background: #0f172a;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 4px;
    padding: 6px;
    font-family: monospace;
    font-size: 10px;
    color: #94a3b8;
}

.dev-actions {
    display: flex;
    gap: 6px;
}

.btn-dev-action {
    flex: 1;
    background: #334155;
    color: #ffffff;
    border: none;
    padding: 5px;
    border-radius: 4px;
    font-size: 10px;
    cursor: pointer;
}

.btn-dev-action:hover {
    background: #475569;
}

/* Toast Notifikasi Ringan (misal untuk Klik Kanan / Copas) */
.toast-notice {
    position: fixed;
    top: 75px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    background: #0f172a;
    color: #ffffff;
    padding: 8px 18px;
    border-radius: 30px;
    font-size: 12px;
    font-weight: 600;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    pointer-events: none;
    transition: all 0.25s ease;
    z-index: 9999;
}

.toast-notice.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Modal Konfirmasi Selesai Ujian */
.finish-modal-wrap {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0,0,0,0.5);
    z-index: 9997;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.finish-modal {
    background: #ffffff;
    border-radius: var(--radius-lg);
    max-width: 440px;
    width: 100%;
    padding: 24px;
    text-align: center;
    box-shadow: var(--shadow-lg);
}

/* ==========================================================================
   7. RESPONSIVE DESIGN (HP / MOBILE OPTIMIZATION)
   ========================================================================== */
@media (max-width: 900px) {
    .exam-layout {
        position: relative;
    }
    
    .btn-grid-toggle {
        display: block;
    }
    
    .exam-sidebar {
        position: absolute;
        top: 0;
        right: 0;
        bottom: 0;
        width: 85%;
        max-width: 320px;
        z-index: 100;
        box-shadow: -5px 0 20px rgba(0,0,0,0.15);
        transform: translateX(100%);
        transition: transform 0.25s ease;
    }
    
    .exam-sidebar.open {
        transform: translateX(0);
    }
    
    .navbar-center .autosave-pill {
        display: none; /* Sembunyikan di HP sempit agar timer lega */
    }
    
    .student-tag {
        display: none;
    }
    
    .exam-question-area {
        padding: 16px;
    }
    
    .question-card {
        padding: 16px;
    }
    
    .exam-navigation-bar {
        padding: 10px 12px;
        gap: 8px;
    }
    
    .btn-nav {
        padding: 8px 12px;
        font-size: 11.5px;
    }
}

/* Animasi */
@keyframes fadeInScale {
    from { opacity: 0; transform: scale(0.96); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes modalPop {
    from { opacity: 0; transform: scale(0.85); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes pulseRed {
    0% { box-shadow: 0 0 0 0 rgba(220, 38, 38, 0.4); }
    70% { box-shadow: 0 0 0 8px rgba(220, 38, 38, 0); }
    100% { box-shadow: 0 0 0 0 rgba(220, 38, 38, 0); }
}