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

:root {
    --bg-page: #f8fafc;
    --bg-card: #ffffff;
    --bg-subtle: #f1f5f9;
    --border-color: #cbd5e1;
    --border-light: #e2e8f0;
    --border-focus: #2563eb;
    
    --text-main: #0f172a;
    --text-body: #1e293b;
    --text-muted: #64748b;
    --text-subtle: #94a3b8;
    
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #eff6ff;
    
    --success: #16a34a;
    --success-bg: #f0fdf4;
    --success-border: #86efac;
    
    --danger: #dc2626;
    --danger-bg: #fef2f2;
    --danger-border: #fca5a5;
    
    --radius-sharp: 4px;
    --radius-sm: 6px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-page);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    font-size: 15px;
    line-height: 1.6;
}

                                                            
                                           
                                                               
.reading-top-bar {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: #ffffff;
    border-bottom: 1px solid var(--border-color);
    padding: 10px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.bar-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-back-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text-body);
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 600;
    padding: 6px 12px;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sharp);
    transition: all 0.15s ease;
}

.nav-back-pill:hover {
    background: var(--bg-subtle);
    color: var(--text-main);
    border-color: #94a3b8;
}

.brand-divider {
    width: 1px;
    height: 20px;
    background: var(--border-light);
}

.test-identity .exam-tag {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--text-main);
}

                          
.bar-center {
    flex: 1;
    max-width: 440px;
}

.test-switcher-wrap {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
}

.switcher-icon {
    position: absolute;
    left: 12px;
    color: var(--text-muted);
    font-size: 0.9rem;
    pointer-events: none;
}

.test-select-dropdown {
    width: 100%;
    appearance: none;
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sharp);
    padding: 7px 32px 7px 34px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-main);
    cursor: pointer;
    outline: none;
    transition: all 0.15s ease;
}

.test-select-dropdown:hover {
    border-color: #94a3b8;
}

.test-select-dropdown:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.15);
}

               
.bar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.hud-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sharp);
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-main);
}

.timer-pill {
    font-family: 'Inter', monospace;
    font-size: 0.95rem;
    color: #1e293b;
    border-color: #cbd5e1;
}

.timer-pill.warning {
    color: #b45309;
    border-color: #f59e0b;
    background: #fffbeb;
}

.timer-pill.danger {
    color: #b91c1c;
    border-color: #ef4444;
    background: #fef2f2;
    animation: pulse 1s infinite;
}

.progress-pill {
    color: var(--primary);
}

                                                            
                 
                                                               
.reading-container {
    flex: 1;
    width: 100%;
    max-width: 1360px;
    margin: 20px auto 50px auto;
    padding: 0 20px;
}

.reading-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sharp);
    padding: 24px;
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.05);
}

            
.reading-card-header {
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 18px;
    margin-bottom: 20px;
}

.header-tags {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.badge-level {
    background-color: #0f172a;
    color: #ffffff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: var(--radius-sharp);
    letter-spacing: 0.5px;
}

.badge-type {
    background-color: var(--bg-subtle);
    color: var(--text-body);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 3px 8px;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sharp);
}

.badge-time {
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-left: auto;
}

.passage-title {
    font-size: 1.45rem;
    font-weight: 800;
    color: var(--text-main);
    line-height: 1.3;
    margin-bottom: 14px;
}

.instruction-banner {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background-color: #f8fafc;
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--primary);
    border-radius: var(--radius-sharp);
    padding: 12px 14px;
    font-size: 0.88rem;
    color: var(--text-body);
    line-height: 1.5;
}

.inst-icon {
    color: var(--primary);
    font-size: 1rem;
    margin-top: 1px;
}

                                   
.mobile-segmented-switch {
    display: none;
    margin-top: 16px;
    background: #f1f5f9;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sharp);
    padding: 4px;
    gap: 4px;
}

.mobile-tab-btn {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 10px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    background: transparent;
    border: none;
    border-radius: var(--radius-sharp);
    cursor: pointer;
    transition: all 0.15s ease;
}

.mobile-tab-btn.active {
    background: #ffffff;
    color: var(--text-main);
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.08);
    font-weight: 700;
}

                                                            
                                               
                                                               
.part3-workspace {
    display: grid;
    grid-template-columns: 1.25fr 1fr;
    gap: 24px;
    align-items: start;
    margin-bottom: 24px;
}

.column-header {
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-light);
}

.column-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 8px;
}

.column-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
}

                     
.paragraphs-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.paragraph-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sharp);
    padding: 16px 18px;
    transition: all 0.15s ease;
}

.paragraph-card:hover {
    border-color: #94a3b8;
}

.paragraph-card.selected {
    border-color: #93c5fd;
    background-color: #fbfdff;
}

.paragraph-card.correct {
    border-color: var(--success);
    background-color: var(--success-bg);
}

.paragraph-card.wrong {
    border-color: var(--danger);
    background-color: var(--danger-bg);
}

.paragraph-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.para-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 700;
    font-size: 0.85rem;
    color: #ffffff;
    background-color: #1e293b;
    padding: 3px 8px;
    border-radius: var(--radius-sharp);
}

.question-indicator {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-muted);
}

.paragraph-content {
    font-size: 0.94rem;
    line-height: 1.7;
    color: var(--text-body);
    margin-bottom: 14px;
    white-space: pre-line;
}

                                     
.match-box {
    background: #f8fafc;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sharp);
    padding: 10px 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.match-box-label {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 5px;
}

.heading-match-select {
    width: 100%;
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sharp);
    padding: 8px 12px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-main);
    outline: none;
    cursor: pointer;
    transition: all 0.15s ease;
}

.heading-match-select:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.15);
}

.heading-match-select:disabled {
    background: #f1f5f9;
    color: var(--text-muted);
    cursor: not-allowed;
}

                                                         
.eval-feedback-badge {
    margin-top: 6px;
    padding: 6px 10px;
    border-radius: var(--radius-sharp);
    font-size: 0.82rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
}

.eval-feedback-badge.correct {
    background: var(--success-bg);
    color: var(--success);
    border: 1px solid var(--success-border);
}

.eval-feedback-badge.wrong {
    background: var(--danger-bg);
    color: var(--danger);
    border: 1px solid var(--danger-border);
}

                                 
.headings-column {
    position: sticky;
    top: 64px;
}

.headings-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: calc(100vh - 160px);
    overflow-y: auto;
    padding-right: 4px;
}

.headings-list::-webkit-scrollbar {
    width: 5px;
}
.headings-list::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

.heading-ref-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sharp);
    padding: 10px 14px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    transition: all 0.15s ease;
}

.heading-ref-card:hover {
    border-color: #94a3b8;
}

.heading-ref-card.used {
    background-color: #f8fafc;
    border-color: #cbd5e1;
    opacity: 0.75;
}

.heading-roman-pill {
    min-width: 32px;
    text-align: center;
    font-weight: 800;
    font-size: 0.82rem;
    color: #1e293b;
    background: #f1f5f9;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sharp);
    padding: 3px 6px;
}

.heading-ref-text {
    flex: 1;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-body);
    line-height: 1.45;
}

.heading-used-badge {
    font-size: 0.72rem;
    font-weight: 700;
    background: #eff6ff;
    color: var(--primary);
    border: 1px solid #bfdbfe;
    border-radius: var(--radius-sharp);
    padding: 2px 6px;
    margin-left: 6px;
    white-space: nowrap;
}

                                                            
                             
                                                               
.reading-actions {
    position: sticky;
    bottom: 0;
    z-index: 90;
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sharp);
    padding: 12px 18px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 12px;
    box-shadow: 0 -2px 10px rgba(15, 23, 42, 0.05);
}

.btn-reset, .btn-send {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 0.92rem;
    font-weight: 700;
    border-radius: var(--radius-sharp);
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.15s ease;
}

.btn-reset {
    background-color: #ffffff;
    color: var(--text-body);
    border-color: var(--border-color);
}

.btn-reset:hover {
    background-color: var(--bg-subtle);
    border-color: #94a3b8;
}

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

.btn-send:hover {
    background-color: var(--primary-hover);
}

.btn-send:disabled, .btn-reset:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

                                                            
                                     
                                                               
.result-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(2px);
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.result-modal-overlay.open {
    display: flex;
}

.result-modal-dialog {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sharp);
    width: 100%;
    max-width: 680px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    animation: modalIn 0.2s ease-out;
}

@keyframes modalIn {
    from { transform: scale(0.97); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.modal-top {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-badge-done {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-main);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-modal-close {
    background: transparent;
    border: none;
    font-size: 1.1rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-sharp);
}

.btn-modal-close:hover {
    background: var(--bg-subtle);
    color: var(--text-main);
}

                
.modal-hero {
    padding: 20px;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    gap: 20px;
    background-color: #fafbfc;
}

.hero-score-disc {
    min-width: 110px;
    height: 110px;
    background: #ffffff;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sharp);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 8px;
}

.score-num {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-main);
    line-height: 1;
}

.score-denom {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
}

.score-pct-label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary);
    margin-top: 4px;
}

.hero-verdict {
    flex: 1;
}

.cefr-badge-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.cefr-badge {
    background: #0f172a;
    color: #ffffff;
    font-size: 0.82rem;
    font-weight: 800;
    padding: 3px 8px;
    border-radius: var(--radius-sharp);
}

.cefr-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-main);
}

.cefr-comment {
    font-size: 0.86rem;
    color: var(--text-body);
    line-height: 1.5;
    margin-bottom: 10px;
}

.sync-indicator {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.76rem;
    font-weight: 600;
    color: var(--success);
}

                         
.modal-breakdown-box {
    padding: 16px 20px;
    overflow-y: auto;
    max-height: 280px;
}

.breakdown-title {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 10px;
}

.breakdown-grid {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.breakdown-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sharp);
    padding: 10px 12px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.breakdown-card.correct {
    border-left: 4px solid var(--success);
}

.breakdown-card.wrong {
    border-left: 4px solid var(--danger);
}

.breakdown-card-idx {
    font-weight: 800;
    font-size: 0.88rem;
    color: #1e293b;
    background: #f1f5f9;
    padding: 4px 8px;
    border-radius: var(--radius-sharp);
}

.breakdown-card-info {
    flex: 1;
    font-size: 0.84rem;
}

.modal-actions {
    padding: 14px 20px;
    border-top: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    background: #fafbfc;
}

.btn-modal-action {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    font-size: 0.88rem;
    font-weight: 600;
    border-radius: var(--radius-sharp);
    text-decoration: none;
    cursor: pointer;
    border: 1px solid transparent;
}

.btn-modal-retry {
    background: #ffffff;
    border-color: var(--border-color);
    color: var(--text-body);
}

.btn-modal-retry:hover {
    background: var(--bg-subtle);
}

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

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

                          
.passage-empty-state {
    padding: 48px 24px;
    text-align: center;
    background: #ffffff;
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-sharp);
    margin: 20px 0;
}

.empty-icon-wrap {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px auto;
    background: #f1f5f9;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sharp);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--text-muted);
}

.empty-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 8px;
}

.empty-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    max-width: 480px;
    margin: 0 auto 18px auto;
    line-height: 1.5;
}

           
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1100;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    background: #0f172a;
    color: #ffffff;
    padding: 10px 16px;
    border-radius: var(--radius-sharp);
    font-size: 0.88rem;
    font-weight: 500;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    gap: 8px;
    animation: toastIn 0.2s ease-out;
}

@keyframes toastIn {
    from { transform: translateY(10px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

                   
.passage-loading-state {
    text-align: center;
    padding: 40px;
    color: var(--text-muted);
}
.passage-loading-state i {
    font-size: 1.6rem;
    margin-bottom: 8px;
    color: var(--primary);
}

                                                            
                                           
                                                               
@media (max-width: 900px) {
    .reading-top-bar {
        padding: 8px 14px;
        flex-wrap: wrap;
    }

    .bar-center {
        order: 3;
        flex-basis: 100%;
        max-width: 100%;
        margin-top: 6px;
    }

    .reading-container {
        margin: 10px auto 70px auto;
        padding: 0 10px;
    }

    .reading-card {
        padding: 16px 14px;
    }

    .mobile-segmented-switch {
        display: flex;
    }

    .part3-workspace {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .part3-workspace.view-paragraphs .headings-column {
        display: none;
    }

    .part3-workspace.view-headings .paragraphs-column {
        display: none;
    }

    .headings-column {
        position: static;
    }

    .headings-list {
        max-height: none;
    }

    .reading-actions {
        border-radius: 0;
        left: 0;
        right: 0;
        margin: 0 -14px -14px -14px;
    }

    .modal-hero {
        flex-direction: column;
        text-align: center;
    }

    .cefr-badge-row {
        justify-content: center;
    }
}