/* ==========================================================================
   6. CEFR Testing & Murphy Grammar Engine
   ========================================================================== */

/* ==========================================================================
   VIEW 4: CEFR Level Testing & Automated Gap Ingestion Styles (Task 15)
   ========================================================================== */

.cefr-view {
    max-width: 960px;
    margin: 0 auto;
    padding: 24px 16px 80px 16px;
    width: 100%;
}

.cefr-overview-container,
.cefr-quiz-container,
.cefr-summary-container {
    width: 100%;
}

.level-code {
    font-weight: 800;
}

.badge-pos {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    background: var(--bg-hover);
    color: var(--text-muted);
    padding: 3px 8px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.clue-icon {
    font-size: 16px;
}

.clue-label {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
}

.cefr-feedback-box .fb-term {
    font-size: 16px;
    color: var(--text-main);
    font-weight: 700;
}

.cefr-feedback-box .fb-trans {
    font-size: 14.5px;
    color: var(--text-main);
    font-weight: 500;
}

.progress-labels-row .counts-text {
    font-size: 12px;
    color: var(--text-muted);
}

.cefr-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.cefr-header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Background Task Banner in CEFR Overview */
.cefr-task-banner {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.12), rgba(16, 185, 129, 0.08));
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    margin-bottom: 24px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.task-banner-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.task-banner-content {
    flex: 1;
}

.task-banner-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-main);
    margin-bottom: 4px;
}

.task-banner-counts {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
    margin-left: auto;
}

.task-banner-msg {
    font-size: 13px;
    color: var(--text-muted);
}

/* Book Source Badge in Question Card & Feedback */
.cefr-book-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    font-weight: 600;
    color: #3b82f6;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.25);
    padding: 2px 10px;
    border-radius: var(--radius-sm);
    max-width: 280px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.fb-source-citation {
    font-size: 12.5px;
    font-weight: 500;
    color: #3b82f6;
    background: rgba(59, 130, 246, 0.08);
    border-left: 3px solid #3b82f6;
    padding: 6px 10px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    margin: 8px 0;
}

.cefr-title-wrap h2 {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.cefr-title-wrap .subtitle {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.5;
}

/* Level Selection Grid */
.cefr-levels-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.cefr-level-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 18px;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.cefr-level-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.level-card-header {
    display: flex;
    align-items: center;
    gap: 14px;
}

.level-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 14px;
    border-radius: 9999px;
    font-weight: 800;
    font-size: 15px;
    letter-spacing: 0.5px;
}

.level-badge-a1 {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.35);
}

.level-badge-a2 {
    background: rgba(56, 189, 248, 0.15);
    color: #38bdf8;
    border: 1px solid rgba(56, 189, 248, 0.35);
}

.level-badge-b1 {
    background: rgba(129, 140, 248, 0.15);
    color: #818cf8;
    border: 1px solid rgba(129, 140, 248, 0.35);
}

.level-badge-b2 {
    background: rgba(245, 158, 11, 0.15);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.35);
}

.level-header-text {
    flex: 1;
}

.level-title {
    font-size: 17px;
    font-weight: 600;
    margin: 0 0 2px 0;
}

.level-meta-sub {
    font-size: 13px;
    color: var(--text-muted);
}

/* Progress bar inside card */
.level-card-progress {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.progress-bar-wrap {
    height: 8px;
    background-color: var(--bg-hover);
    border-radius: 9999px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    border-radius: 9999px;
    transition: width 0.4s ease;
}

.progress-bar-fill.level-badge-a1 { background-color: #10b981; }
.progress-bar-fill.level-badge-a2 { background-color: #38bdf8; }
.progress-bar-fill.level-badge-b1 { background-color: #818cf8; }
.progress-bar-fill.level-badge-b2 { background-color: #f59e0b; }

.progress-labels-row {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-muted);
}

.progress-labels-row .pct-text {
    font-weight: 600;
    color: var(--text-main);
}

/* Mini metrics */
.level-card-metrics {
    display: flex;
    justify-content: space-between;
    background-color: var(--bg-hover);
    border-radius: var(--radius-md);
    padding: 10px 12px;
}

.mini-metric {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.mini-metric .m-val {
    font-size: 14px;
    font-weight: 700;
}

.mini-metric .m-lbl {
    font-size: 11px;
    color: var(--text-muted);
}

.level-card-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: auto;
}

/* Quiz Topbar */
.cefr-quiz-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 24px;
    padding: 12px 18px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.cefr-quiz-topbar-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.cefr-quiz-topbar-center {
    display: flex;
    align-items: center;
    gap: 14px;
    flex: 1;
    max-width: 380px;
}

/* Cloze Card */
.cefr-quiz-card-wrapper {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.cefr-cloze-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    gap: 20px;
    animation: fadeIn 0.25s ease-out;
}

.cefr-cloze-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.cefr-mode-tag {
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    background: rgba(56, 189, 248, 0.1);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
}

/* Sentence & Blank */
.cefr-sentence-wrap {
    padding: 18px 0;
}

.cefr-sentence-text {
    font-size: 22px;
    font-weight: 500;
    line-height: 1.6;
    color: var(--text-main);
    margin: 0;
}

.cefr-blank {
    display: inline-block;
    min-width: 90px;
    text-align: center;
    background: rgba(56, 189, 248, 0.12);
    border-bottom: 2px dashed var(--primary);
    padding: 2px 12px;
    border-radius: 4px;
    font-weight: 700;
    color: var(--primary);
    transition: all 0.25s ease;
}

.cefr-blank.blank-correct {
    background: rgba(16, 185, 129, 0.2);
    border-bottom: 2px solid #10b981;
    color: #10b981;
}

.cefr-blank.blank-wrong-revealed {
    background: rgba(239, 68, 68, 0.2);
    border-bottom: 2px solid #ef4444;
    color: #f87171;
}

/* Clue Box */
.cefr-clue-box {
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: var(--bg-hover);
    padding: 10px 14px;
    border-radius: var(--radius-md);
    font-size: 14px;
    color: var(--text-muted);
}

.cefr-clue-box .clue-term {
    color: var(--text-main);
    font-size: 15px;
}

/* Options Grid: 2x2 */
.cefr-options-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-top: 6px;
}

.cefr-opt-btn {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 12px;
    background-color: var(--bg-surface);
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    min-height: 56px;
    color: var(--text-main);
    font-size: 17px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    outline: none;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.cefr-opt-btn:hover:not(:disabled) {
    border-color: var(--primary);
    background-color: var(--bg-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(56, 189, 248, 0.15);
}

.cefr-opt-btn:active:not(:disabled) {
    transform: scale(0.98);
}

.cefr-opt-btn .opt-num {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
}

.cefr-opt-btn .opt-text {
    flex: 1;
    text-align: left;
}

/* Option States */
.cefr-opt-btn.opt-correct {
    background-color: #10b981 !important;
    border-color: #10b981 !important;
    color: #fff !important;
    box-shadow: 0 0 16px rgba(16, 185, 129, 0.4);
}

.cefr-opt-btn.opt-correct .opt-num {
    color: rgba(255, 255, 255, 0.8) !important;
}

.cefr-opt-btn.opt-wrong {
    background-color: #ef4444 !important;
    border-color: #ef4444 !important;
    color: #fff !important;
    box-shadow: 0 0 16px rgba(239, 68, 68, 0.4);
}

.cefr-opt-btn.opt-wrong .opt-num {
    color: rgba(255, 255, 255, 0.8) !important;
}

.cefr-opt-btn.opt-correct-revealed {
    border-color: #10b981 !important;
    background-color: rgba(16, 185, 129, 0.15) !important;
    color: #10b981 !important;
    animation: pulseBorder 1.5s infinite ease-in-out;
}

@keyframes pulseBorder {
    0%, 100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.5); }
    50% { box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
}

/* Feedback Box */
.cefr-feedback-box {
    border-radius: var(--radius-md);
    padding: 18px 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    animation: fadeIn 0.25s ease-out;
}

.cefr-feedback-box.feedback-correct {
    background: rgba(16, 185, 129, 0.12);
    border: 1px solid rgba(16, 185, 129, 0.35);
}

.cefr-feedback-box.feedback-wrong {
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.35);
}

.cefr-feedback-box .fb-title {
    font-size: 16px;
    font-weight: 700;
}

.cefr-feedback-box.feedback-correct .fb-title {
    color: #10b981;
}

.cefr-feedback-box.feedback-wrong .fb-title {
    color: #ef4444;
}

.cefr-feedback-box .fb-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
}

.cefr-feedback-box .fb-explanation {
    margin: 4px 0 0 0;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-main);
}

/* Gap Ingestion Badge inside mistake feedback */
.cefr-gap-ingested-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-md);
    padding: 10px 14px;
    margin-top: 6px;
    font-size: 13px;
    line-height: 1.4;
    color: var(--text-main);
}

.cefr-gap-ingested-badge .badge-icon {
    font-size: 18px;
}

/* Dual Gap Ingestion (Correct + Chosen Mistake) */
.cefr-dual-ingested-box {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.25);
    border-radius: var(--radius-md);
    padding: 12px 14px;
    margin-top: 10px;
    animation: fadeIn 0.2s ease-out;
}

.dual-ingested-header {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-main);
    margin-bottom: 8px;
}

.dual-ingested-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.ingested-chip {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 6px 10px;
    font-size: 12.5px;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 5px;
}

.ingested-chip.chip-target {
    border-left: 3px solid #10b981;
}

.ingested-chip.chip-chosen {
    border-left: 3px solid #ef4444;
}

.ingested-chip .chip-label {
    font-size: 10.5px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-muted);
}

/* Words Breakdown (All 4 Options with In-library/Add buttons) */
.cefr-words-breakdown {
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid var(--border-color);
    text-align: left;
}

.words-breakdown-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    flex-wrap: wrap;
    gap: 6px;
}

.wb-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 6px;
}

.wb-hint {
    font-size: 11.5px;
    color: var(--text-muted);
}

.words-breakdown-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 8px;
}

.word-breakdown-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 9px 11px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    transition: all 0.15s ease;
}

.word-breakdown-card.is-target {
    border-color: rgba(16, 185, 129, 0.4);
    background: rgba(16, 185, 129, 0.05);
}

.word-breakdown-card.is-chosen-mistake {
    border-color: rgba(239, 68, 68, 0.4);
    background: rgba(239, 68, 68, 0.05);
}

.wb-card-top {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 6px;
}

.wb-term {
    font-size: 14px;
    color: var(--text-main);
    font-weight: 700;
}

.wb-pos {
    font-size: 10px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
}

.wb-trans {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.35;
    flex-grow: 1;
}

.wb-action-wrap {
    margin-top: 6px;
}

.wb-badge {
    font-size: 11px;
    font-weight: 700;
    padding: 3px 6px;
    border-radius: 4px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.wb-badge.badge-auto-added {
    color: #ef4444;
    background: rgba(239, 68, 68, 0.12);
}

.wb-badge.badge-in-lib,
.wb-badge.badge-just-added {
    color: #10b981;
    background: rgba(16, 185, 129, 0.12);
}

.btn-add-option-word {
    width: 100%;
    font-size: 11px;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
}

/* Next Button Bar */
.cefr-next-bar {
    margin-top: 10px;
    animation: fadeIn 0.2s ease-out;
}

/* Summary Screen */
.cefr-summary-container {
    max-width: 680px;
    margin: 40px auto;
}

.cefr-summary-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 44px 32px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    box-shadow: var(--shadow-lg);
    animation: fadeIn 0.3s ease-out;
}

.cefr-loading-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 48px;
    color: var(--text-muted);
}

/* Mobile Responsive */
@media (max-width: 640px) {
    .cefr-sentence-text {
        font-size: 18px;
    }

    .cefr-options-grid {
        grid-template-columns: 1fr;
    }

    .cefr-opt-btn {
        min-height: 52px;
        padding: 14px 16px;
    }

    .cefr-cloze-card {
        padding: 20px 16px;
    }
}


/* ==========================================================================
   Task 16: Murphy Grammar Engine & Handwritten Journaling Styles
   ========================================================================== */

.grammar-view {
    padding: 24px 20px 80px 20px;
    max-width: 1100px;
    margin: 0 auto;
    animation: fadeIn 0.2s ease-out;
}

.grammar-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.grammar-title-wrap h2 {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.grammar-title-wrap .subtitle {
    font-size: 14px;
    color: var(--text-muted);
    max-width: 720px;
    line-height: 1.5;
}

.grammar-top-stats {
    display: flex;
    gap: 12px;
}

.grammar-stat-chip {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 8px 16px;
    min-width: 80px;
}

.grammar-stat-chip .stat-num {
    font-size: 20px;
    font-weight: 800;
    color: var(--color-primary);
}

.grammar-stat-chip .stat-lbl {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
}

/* Filter Bar */
.grammar-filter-bar {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 8px;
    margin-bottom: 24px;
    -webkit-overflow-scrolling: touch;
}

.grammar-filter-pill {
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.15s ease;
}

.grammar-filter-pill:hover {
    border-color: var(--color-primary);
    color: var(--text-main);
}

.grammar-filter-pill.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #ffffff;
}

/* Units Grid */
.grammar-units-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 18px;
}

.grammar-unit-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    flex-direction: column;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
    box-shadow: var(--shadow-sm);
}

.grammar-unit-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
}

.grammar-unit-card.is-completed {
    border-left: 4px solid #10b981;
}

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

.grammar-unit-number {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.04em;
}

.grammar-level-pill {
    font-size: 11px;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 6px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.grammar-level-pill.badge-a1 {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.25);
}

.grammar-level-pill.badge-b1 {
    background: rgba(59, 130, 246, 0.15);
    color: #3b82f6;
    border: 1px solid rgba(59, 130, 246, 0.25);
}

.grammar-card-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 6px;
    line-height: 1.35;
}

.grammar-card-sub {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.45;
    margin-bottom: 14px;
    flex-grow: 1;
}

.grammar-card-meta {
    margin-bottom: 14px;
}

.grammar-card-cat {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.grammar-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}

.grammar-badges {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.badge-status-completed {
    font-size: 11px;
    font-weight: 700;
    color: #10b981;
    background: rgba(16, 185, 129, 0.12);
    padding: 2px 7px;
    border-radius: 4px;
    display: inline-flex;
    align-items: center;
    gap: 3px;
}

.badge-status-handwritten {
    font-size: 11px;
    font-weight: 700;
    color: #8b5cf6;
    background: rgba(139, 92, 246, 0.12);
    padding: 2px 7px;
    border-radius: 4px;
    display: inline-flex;
    align-items: center;
    gap: 3px;
}

.badge-status-new {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    background: var(--bg-surface);
    padding: 2px 7px;
    border-radius: 4px;
}

/* ==========================================================================
   Grammar Lesson Screen (Theory & Deep Work Mode)
   ========================================================================== */

.grammar-lesson-container {
    max-width: 860px;
    margin: 0 auto;
    animation: fadeIn 0.2s ease-out;
}

.grammar-lesson-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    gap: 16px;
    flex-wrap: wrap;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 12px 18px;
}

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

.grammar-lesson-badges {
    display: flex;
    align-items: center;
    gap: 8px;
}

.grammar-unit-pill {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 3px 8px;
    border-radius: 6px;
    color: var(--text-main);
}

.grammar-tab-switch {
    display: inline-flex;
    background: var(--bg-input);
    padding: 3px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.grammar-tab-switch .tab-btn {
    padding: 6px 14px;
    font-size: 13px;
    font-weight: 600;
    border: none;
    background: transparent;
    color: var(--text-muted);
    border-radius: calc(var(--radius-md) - 2px);
    cursor: pointer;
    transition: all 0.15s ease;
}

.grammar-tab-switch .tab-btn.active {
    background: var(--bg-card);
    color: var(--text-main);
    box-shadow: var(--shadow-sm);
}

.grammar-cat-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
}

.grammar-theory-header {
    margin-bottom: 24px;
}

.lesson-main-title {
    font-size: 26px;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 6px;
    letter-spacing: -0.02em;
}

.lesson-sub-title {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.5;
}

.grammar-section-block {
    margin-bottom: 28px;
}

.section-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Contrast Cards (Situation A vs Situation B) */
.grammar-contrasts-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.grammar-contrast-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 16px;
    box-shadow: var(--shadow-sm);
}

.contrast-col {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.contrast-header {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 8px;
}

.contrast-pill {
    font-size: 10px;
    font-weight: 800;
    padding: 2px 6px;
    border-radius: 4px;
    text-transform: uppercase;
}

.contrast-pill.a {
    background: rgba(59, 130, 246, 0.15);
    color: #3b82f6;
}

.contrast-pill.b {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
}

.contrast-example {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-main);
    background: var(--bg-input);
    padding: 10px 12px;
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-primary);
    line-height: 1.4;
}

.contrast-trans {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.4;
    font-style: italic;
}

.contrast-divider {
    display: flex;
    align-items: center;
    justify-content: center;
}

.vs-badge {
    background: var(--bg-surface-hover);
    color: var(--text-muted);
    font-weight: 800;
    font-size: 11px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
}

.contrast-key-diff {
    grid-column: 1 / -1;
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.25);
    border-radius: var(--radius-md);
    padding: 10px 14px;
    font-size: 13px;
    line-height: 1.5;
    color: var(--text-main);
    margin-top: 6px;
}

/* Golden Formula Card */
.grammar-golden-formula-card {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(168, 85, 247, 0.08));
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-lg);
    padding: 22px;
    position: relative;
    box-shadow: var(--shadow-sm);
}

.notebook-pen-icon {
    position: absolute;
    top: 18px;
    right: 20px;
    font-size: 24px;
    opacity: 0.6;
}

.formula-instructions {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.golden-formula-code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 16px;
    font-weight: 700;
    color: var(--text-main);
    background: var(--bg-card);
    padding: 14px 18px;
    border-radius: var(--radius-md);
    border: 1px dashed rgba(99, 102, 241, 0.4);
    line-height: 1.5;
    white-space: pre-line;
}

/* Journaling Card & Checkbox */
.grammar-journaling-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-sm);
}

.journaling-prompt-box {
    margin-bottom: 16px;
}

.journaling-prompt-text {
    font-size: 14px;
    line-height: 1.55;
    color: var(--text-main);
}

.journaling-action-box {
    border-top: 1px solid var(--border-color);
    padding-top: 16px;
}

.handwritten-checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    cursor: pointer;
    user-select: none;
    min-height: 48px;
    padding: 8px 12px;
    border-radius: var(--radius-md);
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    transition: all 0.15s ease;
}

.handwritten-checkbox-label:hover {
    border-color: #8b5cf6;
    background: rgba(139, 92, 246, 0.05);
}

.handwritten-checkbox {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.custom-chk {
    width: 22px;
    height: 22px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-card);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 2px;
    transition: all 0.15s ease;
}

.handwritten-checkbox:checked + .custom-chk {
    background: #8b5cf6;
    border-color: #8b5cf6;
}

.handwritten-checkbox:checked + .custom-chk::after {
    content: "✓";
    color: #ffffff;
    font-size: 14px;
    font-weight: 800;
}

.handwritten-label-text {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.handwritten-label-text strong {
    font-size: 14px;
    color: var(--text-main);
}

.handwritten-label-text small {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.35;
}

.grammar-theory-footer {
    display: flex;
    justify-content: flex-end;
    margin-top: 28px;
}

/* ==========================================================================
   Cloze Tap Practice (5 Micro-Exercises)
   ========================================================================== */

.grammar-practice-card-wrap {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.practice-header-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.practice-step-text {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.practice-dots {
    display: flex;
    gap: 8px;
}

.practice-dots .dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border-color);
    transition: all 0.2s ease;
}

.practice-dots .dot-active {
    background: var(--color-primary);
    transform: scale(1.2);
}

.practice-dots .dot-done {
    background: #10b981;
}

.grammar-cloze-box {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px 20px;
    text-align: center;
}

.cloze-sentence-display {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-main);
    line-height: 1.6;
    margin-bottom: 12px;
}

.cloze-blank {
    display: inline-block;
    color: var(--color-primary);
    border-bottom: 2px dashed var(--color-primary);
    padding: 0 8px;
    font-weight: 700;
    min-width: 80px;
    transition: all 0.2s ease;
}

.cloze-blank.blank-correct {
    color: #10b981;
    border-bottom-color: #10b981;
}

.cloze-blank.blank-wrong {
    color: #ef4444;
    border-bottom-color: #ef4444;
}

.cloze-clue-display {
    font-size: 14px;
    color: var(--text-muted);
    font-style: italic;
}

.grammar-tap-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.grammar-opt-btn {
    min-height: 52px;
    padding: 14px 18px;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 600;
    text-align: left;
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-surface);
    border: 1.5px solid var(--border-color);
    color: var(--text-main);
    cursor: pointer;
    transition: all 0.15s ease;
}

.grammar-opt-btn .opt-num {
    font-size: 11px;
    font-weight: 800;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--bg-surface-hover);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.grammar-opt-btn:hover:not(:disabled) {
    border-color: var(--color-primary);
    background: var(--bg-surface-hover);
}

.grammar-opt-btn.btn-correct {
    background: rgba(16, 185, 129, 0.15) !important;
    border-color: #10b981 !important;
    color: #10b981 !important;
}

.grammar-opt-btn.btn-wrong {
    background: rgba(239, 68, 68, 0.15) !important;
    border-color: #ef4444 !important;
    color: #ef4444 !important;
}

.grammar-feedback-box {
    border-radius: var(--radius-md);
    padding: 16px 18px;
    animation: fadeIn 0.2s ease-out;
}

.grammar-feedback-box.feedback-correct {
    background: rgba(16, 185, 129, 0.12);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.grammar-feedback-box.feedback-wrong {
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.grammar-feedback-box .feedback-title {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.feedback-correct .feedback-title {
    color: #10b981;
}

.feedback-wrong .feedback-title {
    color: #ef4444;
}

.grammar-feedback-box .feedback-text {
    font-size: 13.5px;
    color: var(--text-main);
    line-height: 1.5;
}

.feedback-srs-ingested {
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid rgba(239, 68, 68, 0.2);
    font-size: 12.5px;
    font-weight: 600;
    color: #ef4444;
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ==========================================================================
   Grammar Summary Card
   ========================================================================== */

.grammar-summary-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 44px 32px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    box-shadow: var(--shadow-lg);
    animation: fadeIn 0.3s ease-out;
    max-width: 680px;
    margin: 0 auto;
}

.summary-score-large {
    font-size: 48px;
    font-weight: 900;
    color: var(--color-primary);
    line-height: 1;
}

.summary-reminder-box {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.25);
    border-radius: var(--radius-md);
    padding: 12px 18px;
    text-align: left;
    max-width: 500px;
}

.summary-reminder-box .reminder-icon {
    font-size: 24px;
    flex-shrink: 0;
}

.summary-reminder-box .reminder-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
    font-size: 13px;
    line-height: 1.4;
    color: var(--text-main);
}

/* Mobile Responsive */
@media (max-width: 640px) {
    .grammar-view {
        padding: 16px 12px 90px 12px;
    }

    .grammar-contrast-card {
        grid-template-columns: 1fr;
    }

    .contrast-divider {
        margin: 4px 0;
    }

    .grammar-tap-options {
        grid-template-columns: 1fr;
    }

    .grammar-opt-btn {
        min-height: 48px;
        padding: 12px 14px;
    }

    .cloze-sentence-display {
        font-size: 17px;
    }

    .grammar-lesson-topbar {
        flex-direction: column;
        align-items: stretch;
    }

    .grammar-tab-switch {
        width: 100%;
        display: flex;
    }

    .grammar-tab-switch .tab-btn {
        flex: 1;
        text-align: center;
    }
}

/* ==========================================================================
   FEAT-02: Murphy Cheatsheet Tables & Rich Detailed Notes
   ========================================================================== */

.grammar-table-wrap {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    box-shadow: var(--shadow-sm);
    margin: 12px 0 16px 0;
}

.grammar-cheatsheet-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13.5px;
    line-height: 1.5;
    text-align: left;
}

.grammar-cheatsheet-table thead th {
    background: var(--bg-surface-hover);
    color: var(--text-main);
    font-weight: 700;
    padding: 10px 14px;
    border-bottom: 2px solid var(--border-color);
    white-space: nowrap;
}

.grammar-cheatsheet-table tbody td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-main);
    vertical-align: top;
}

.grammar-cheatsheet-table tbody tr:last-child td {
    border-bottom: none;
}

.grammar-cheatsheet-table tbody tr:hover {
    background: rgba(99, 102, 241, 0.04);
}

.grammar-inline-code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 12.5px;
    background: var(--bg-input);
    color: var(--color-primary);
    padding: 2px 5px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.grammar-notes-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    color: var(--text-main);
    font-size: 14px;
    line-height: 1.65;
    box-shadow: var(--shadow-sm);
}

.grammar-notes-box .grammar-note-h3 {
    font-size: 16px;
    font-weight: 800;
    color: var(--text-main);
    margin: 16px 0 8px 0;
    letter-spacing: -0.01em;
}

.grammar-notes-box .grammar-note-h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--color-primary);
    margin: 16px 0 8px 0;
}

.grammar-notes-box .grammar-note-h5 {
    font-size: 13.5px;
    font-weight: 700;
    color: var(--text-muted);
    margin: 12px 0 6px 0;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.grammar-notes-box .grammar-note-p {
    margin: 0 0 10px 0;
}

.grammar-notes-box .grammar-note-quote {
    border-left: 3px solid var(--color-primary);
    background: rgba(99, 102, 241, 0.06);
    padding: 8px 14px;
    margin: 10px 0;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-style: italic;
    color: var(--text-main);
}

.grammar-notes-list {
    margin: 0 0 12px 0;
    padding-left: 20px;
}

.grammar-notes-list li {
    margin-bottom: 6px;
    line-height: 1.55;
}

/* Collapsible Practice Cheatsheet Drawer */
.practice-cheatsheet-toggle-wrap {
    margin-bottom: 16px;
}

.practice-cheatsheet-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12.5px;
    font-weight: 600;
    padding: 6px 12px;
    border-radius: var(--radius-md);
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.15s ease;
}

.practice-cheatsheet-btn:hover {
    color: var(--text-main);
    background: var(--bg-surface-hover);
    border-color: var(--color-primary);
}

.practice-cheatsheet-drawer {
    margin-top: 10px;
    animation: fadeIn 0.2s ease-out;
}