/* =================================================================
   SENTENCE BUILDER EDITOR STYLES
   The Deck Builder surface for authoring Sentence Builder scenes.

   The layout follows the tool's one idea: a scene is not "done" or "not
   done", it is ready for some phases and not others. So the scene row is
   built around FOUR verdict chips rather than one status, and the editor
   modal is a tab strip whose tabs carry those same verdicts — an author
   should see that Audio Match is red without opening it.
   ================================================================= */

/* =================================================================
   HEADER CONTROLS
   ================================================================= */

.sb2-header-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: flex-end;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color, #e5e7eb);
}

.sb2-control-group {
    display: flex;
    align-items: flex-end;
    gap: 8px;
}

.sb2-control-group label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary, #6b7280);
    padding-bottom: 8px;
    white-space: nowrap;
}

.sb2-control-right {
    margin-left: auto;
}

/* =================================================================
   NO LESSON MESSAGE
   ================================================================= */

.sb2-no-lesson-message {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary, #6b7280);
}

.sb2-no-lesson-message i {
    font-size: 48px;
    opacity: 0.35;
    margin-bottom: 16px;
}

.sb2-no-lesson-message h4 {
    margin: 0 0 8px;
    color: var(--text-primary, #111827);
}

/* =================================================================
   LESSON READINESS BAR

   `Word Match 8/8 · Audio Match 5/8 · Speak It 5/8 · Build It 8/8` —
   the gap, before a student meets it. A phase at 0/N is a different
   thing from a phase at 5/8: the first will not be offered at all, so
   it reads differently rather than merely being a lower number.
   ================================================================= */

.sb2-readiness-bar {
    margin-bottom: 18px;
}

.sb2-readiness-cells {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
}

.sb2-readiness-cell {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 10px 12px;
    border-radius: 8px;
    border: 1px solid var(--border-color, #e5e7eb);
    background: var(--bg-secondary, #f9fafb);
}

.sb2-readiness-label {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    color: var(--text-secondary, #6b7280);
}

.sb2-readiness-count {
    font-size: 20px;
    font-weight: 700;
    line-height: 1.1;
    color: var(--text-primary, #111827);
}

.sb2-r-all {
    border-color: #86efac;
    background: rgba(34, 197, 94, 0.08);
}

.sb2-r-some {
    border-color: #fcd34d;
    background: rgba(245, 158, 11, 0.08);
}

.sb2-r-none {
    border-color: #fca5a5;
    background: rgba(239, 68, 68, 0.08);
}

.sb2-r-off {
    opacity: 0.55;
}

.sb2-r-off .sb2-readiness-count {
    font-size: 15px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.sb2-readiness-warn {
    margin-top: 10px;
    padding: 10px 12px;
    border-radius: 8px;
    border: 1px solid #fcd34d;
    background: rgba(245, 158, 11, 0.1);
    font-size: 13px;
    color: var(--text-primary, #111827);
}

/* =================================================================
   SCENE LIST
   ================================================================= */

.sb2-scenes-header {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    margin-bottom: 12px;
}

.sb2-scenes-header h4 {
    margin: 0;
    font-size: 15px;
    color: var(--text-primary, #111827);
}

.sb2-scenes-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-left: auto;
}

.sb2-scenes-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sb2-empty-scenes {
    text-align: center;
    padding: 40px 20px;
    border: 2px dashed var(--border-color, #e5e7eb);
    border-radius: 10px;
    color: var(--text-secondary, #6b7280);
}

.sb2-empty-scenes i {
    font-size: 32px;
    opacity: 0.35;
}

.sb2-empty-scenes .hint {
    font-size: 13px;
    max-width: 44ch;
    margin: 6px auto 0;
}

.sb2-scene-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: 10px;
    background: var(--bg-primary, #fff);
}

.sb2-scene-item.sb2-edited {
    border-left: 3px solid var(--primary, #4f46e5);
}

.sb2-scene-ghost {
    opacity: 0.4;
}

.sb2-scene-drag-handle {
    cursor: grab;
    color: var(--text-secondary, #6b7280);
    opacity: 0.6;
}

.sb2-scene-number {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-secondary, #6b7280);
    min-width: 28px;
}

.sb2-level-chip {
    flex: 0 0 auto;
    min-width: 30px;
    text-align: center;
    padding: 3px 6px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 700;
    background: var(--bg-secondary, #f3f4f6);
    color: var(--text-secondary, #6b7280);
}

.sb2-level-1 {
    background: rgba(34, 197, 94, 0.15);
    color: #15803d;
}

.sb2-level-2 {
    background: rgba(59, 130, 246, 0.15);
    color: #1d4ed8;
}

.sb2-level-3 {
    background: rgba(245, 158, 11, 0.18);
    color: #b45309;
}

.sb2-level-4 {
    background: rgba(239, 68, 68, 0.15);
    color: #b91c1c;
}

.sb2-level-none {
    border: 1px dashed var(--border-color, #d1d5db);
}

.sb2-scene-thumb {
    flex: 0 0 auto;
    width: 64px;
    height: 44px;
}

.sb2-thumb {
    width: 64px;
    height: 44px;
    object-fit: cover;
    border-radius: 6px;
    background: var(--bg-secondary, #f3f4f6);
}

.sb2-thumb-empty {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 44px;
    border: 1px dashed #fca5a5;
    border-radius: 6px;
    color: #ef4444;
    background: rgba(239, 68, 68, 0.06);
}

.sb2-scene-content {
    flex: 1;
    min-width: 0;
}

.sb2-scene-text {
    font-size: 14px;
    color: var(--text-primary, #111827);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.sb2-scene-english {
    font-size: 12px;
    color: var(--text-secondary, #6b7280);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.sb2-sep {
    opacity: 0.4;
    padding: 0 4px;
}

/* =================================================================
   VERDICT CHIPS

   Four per scene, each clicking through to the tab that fixes it. A red
   chip that does not say where to go is a notification, not a tool.
   ================================================================= */

.sb2-chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    flex: 0 0 auto;
}

.sb2-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    border-radius: 999px;
    border: 1px solid transparent;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    background: none;
}

.sb2-chip-ok {
    border-color: #86efac;
    background: rgba(34, 197, 94, 0.1);
    color: #15803d;
}

.sb2-chip-bad {
    border-color: #fca5a5;
    background: rgba(239, 68, 68, 0.1);
    color: #b91c1c;
}

.sb2-chip:hover {
    filter: brightness(0.96);
}

.sb2-scene-actions {
    display: flex;
    gap: 4px;
    flex: 0 0 auto;
}

/* =================================================================
   SCENE EDITOR — TAB STRIP
   ================================================================= */

.sb2-tabstrip {
    display: flex;
    flex-wrap: wrap;
    gap: 2px;
    padding: 0 20px;
    border-bottom: 1px solid var(--border-color, #e5e7eb);
}

.sb2-tab {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 14px;
    border: none;
    border-bottom: 2px solid transparent;
    background: none;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary, #6b7280);
    cursor: pointer;
}

.sb2-tab.active {
    color: var(--primary, #4f46e5);
    border-bottom-color: var(--primary, #4f46e5);
}

.sb2-tab-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    font-size: 9px;
}

.sb2-tab-body {
    min-height: 320px;
}

.sb2-tabpane {
    padding-top: 4px;
}

.sb2-pane-intro {
    font-size: 13px;
    color: var(--text-secondary, #6b7280);
    margin-bottom: 14px;
    max-width: 72ch;
}

.sb2-pane-intro p {
    margin: 0;
}

.sb2-pane-section {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color, #e5e7eb);
}

.sb2-pane-section h4 {
    margin: 0 0 8px;
    font-size: 13px;
    color: var(--text-primary, #111827);
}

.sb2-pane-actions {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

.sb2-pane-warn,
.sb2-pane-ok {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 10px 12px;
    border-radius: 8px;
    font-size: 13px;
    margin: 12px 0;
}

.sb2-pane-warn {
    border: 1px solid #fcd34d;
    background: rgba(245, 158, 11, 0.1);
}

.sb2-pane-ok {
    border: 1px solid #86efac;
    background: rgba(34, 197, 94, 0.08);
}

/* =================================================================
   SCENE TAB
   ================================================================= */

.sb2-scene-preview {
    display: block;
    width: 100%;
    max-width: 520px;
    max-height: 320px;
    border-radius: 10px;
    background: var(--bg-secondary, #f3f4f6);
    object-fit: contain;
}

.sb2-scene-preview-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    height: 220px;
    border: 2px dashed var(--border-color, #d1d5db);
    color: var(--text-secondary, #6b7280);
    text-align: center;
}

.sb2-scene-preview-empty i {
    font-size: 32px;
    opacity: 0.4;
}

.sb2-scene-preview-empty p {
    margin: 0;
}

.sb2-scene-preview-empty .hint {
    font-size: 12px;
    max-width: 40ch;
}

.sb2-asset-path {
    font-family: monospace;
    font-size: 11px;
    color: var(--text-secondary, #6b7280);
    word-break: break-all;
    margin: 8px 0 0;
}

.sb2-sentence-card {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 8px 10px;
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: 8px;
    margin-bottom: 6px;
}

.sb2-narrow {
    max-width: 180px;
}

/* =================================================================
   WORD MATCH TAB
   ================================================================= */

.sb2-options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 10px;
}

.sb2-option {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 12px;
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: 10px;
    background: var(--bg-primary, #fff);
}

.sb2-option-correct {
    border-color: #86efac;
    background: rgba(34, 197, 94, 0.06);
}

.sb2-option-text {
    font-size: 14px;
    color: var(--text-primary, #111827);
}

.sb2-option-english {
    font-size: 12px;
    color: var(--text-secondary, #6b7280);
}

.sb2-option-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
    margin-top: 4px;
}

.sb2-option-num {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-secondary, #6b7280);
}

.sb2-option-badge {
    padding: 2px 7px;
    border-radius: 999px;
    font-size: 10px;
    font-weight: 600;
    background: var(--bg-secondary, #f3f4f6);
    color: var(--text-secondary, #6b7280);
}

.sb2-badge-correct {
    background: rgba(34, 197, 94, 0.15);
    color: #15803d;
}

.sb2-badge-pin {
    background: rgba(79, 70, 229, 0.12);
    color: #4338ca;
}

.sb2-pin-btn {
    align-self: flex-start;
    margin-top: 4px;
    padding: 2px 8px;
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: 6px;
    background: none;
    font-size: 11px;
    cursor: pointer;
    color: var(--text-secondary, #6b7280);
}

.sb2-blocked-list {
    margin: 0 0 8px;
    padding-left: 20px;
    font-size: 13px;
    color: var(--text-primary, #111827);
}

.sb2-blocked-list li {
    margin-bottom: 4px;
}

.sb2-blocked-list code {
    font-size: 12px;
}

.sb2-blocked-pinned {
    color: #b45309;
    font-size: 11px;
}

/* =================================================================
   AUDIO TABS
   ================================================================= */

.sb2-audio-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.sb2-audio-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: 8px;
    flex-wrap: wrap;
}

.sb2-audio-missing {
    border-color: #fca5a5;
    background: rgba(239, 68, 68, 0.05);
}

.sb2-audio-player {
    height: 32px;
    max-width: 240px;
}

.sb2-audio-none {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 600;
    color: #b91c1c;
}

/* =================================================================
   BUILD IT TAB

   The tiles are laid out the way the student sees them, grouped by
   type, because a bank of same-lesson decoys and one padded from "any
   taught word" are identical in a list and obvious side by side.
   ================================================================= */

.sb2-bank {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.sb2-bank-group {
    padding: 10px 12px;
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: 10px;
    background: var(--bg-secondary, #f9fafb);
}

.sb2-bank-bucket {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    color: var(--text-secondary, #6b7280);
    margin-bottom: 6px;
}

.sb2-bank-tiles {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.sb2-tile {
    display: inline-flex;
    align-items: baseline;
    gap: 5px;
    padding: 5px 10px;
    border-radius: 8px;
    border: 1px solid var(--border-color, #d1d5db);
    background: var(--bg-primary, #fff);
    font-size: 13px;
    color: var(--text-primary, #111827);
}

.sb2-tile-answer {
    border-color: #86efac;
    background: rgba(34, 197, 94, 0.08);
}

.sb2-tile-decoy {
    opacity: 0.9;
}

.sb2-tile-source {
    font-size: 9px;
    font-style: normal;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    color: var(--text-secondary, #6b7280);
}

.sb2-unlinked-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 8px;
}

.sb2-unlinked {
    padding: 4px 9px;
    border-radius: 8px;
    border: 1px solid #fca5a5;
    background: rgba(239, 68, 68, 0.08);
    font-size: 13px;
    color: #b91c1c;
}

/* =================================================================
   PICKERS
   ================================================================= */

.sb2-picker-filters {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.sb2-picker-list {
    max-height: 420px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sb2-picker-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: 8px;
    cursor: pointer;
}

.sb2-picker-row:hover {
    border-color: var(--primary, #4f46e5);
}

.sb2-picker-used {
    opacity: 0.55;
}

.sb2-picker-num {
    flex: 0 0 auto;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-secondary, #6b7280);
    min-width: 42px;
}

.sb2-picker-text {
    flex: 1;
    min-width: 0;
    font-size: 13px;
    color: var(--text-primary, #111827);
}

.sb2-picker-english {
    font-size: 12px;
    color: var(--text-secondary, #6b7280);
}

.sb2-picker-audio.has-audio { color: #15803d; }
.sb2-picker-audio.no-audio  { color: #b91c1c; }

.sb2-picker-flag {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--text-secondary, #6b7280);
}

.sb2-picker-empty {
    padding: 30px;
    text-align: center;
    color: var(--text-secondary, #6b7280);
}

/* =================================================================
   ASSET PICKER
   ================================================================= */

.sb2-asset-toolbar {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.sb2-asset-count {
    font-size: 12px;
    color: var(--text-secondary, #6b7280);
    white-space: nowrap;
}

.sb2-asset-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 10px;
    max-height: 440px;
    overflow-y: auto;
}

.sb2-asset-item {
    padding: 8px;
    border: 2px solid transparent;
    border-radius: 10px;
    background: var(--bg-secondary, #f9fafb);
    cursor: pointer;
    text-align: center;
}

.sb2-asset-item.selected {
    border-color: var(--primary, #4f46e5);
}

.sb2-asset-item .sb2-thumb,
.sb2-asset-item .sb2-thumb-empty {
    width: 100%;
    height: 84px;
}

.sb2-asset-name {
    margin-top: 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-primary, #111827);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.sb2-asset-sub {
    font-size: 11px;
    color: var(--text-secondary, #6b7280);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* =================================================================
   RECORDING WORKLIST
   ================================================================= */

.sb2-worklist {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.sb2-worklist-intro {
    font-size: 13px;
    color: var(--text-secondary, #6b7280);
    margin: 0 0 10px;
}

.sb2-worklist-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: 8px;
    flex-wrap: wrap;
}

.sb2-worklist-role {
    display: flex;
    gap: 5px;
}

.sb2-role-answer,
.sb2-role-option {
    padding: 2px 7px;
    border-radius: 999px;
    font-size: 10px;
    font-weight: 600;
}

.sb2-role-answer {
    background: rgba(239, 68, 68, 0.12);
    color: #b91c1c;
}

.sb2-role-option {
    background: rgba(245, 158, 11, 0.14);
    color: #b45309;
}

.sb2-worklist-done {
    text-align: center;
    padding: 30px;
    color: #15803d;
}

.sb2-worklist-done i {
    font-size: 32px;
}

/* =================================================================
   SETTINGS AND SHARED FORM BITS
   ================================================================= */

.sb2-settings-heading {
    margin: 20px 0 6px;
    padding-top: 14px;
    border-top: 1px solid var(--border-color, #e5e7eb);
    font-size: 13px;
    color: var(--text-primary, #111827);
}

.sb2-settings-hint {
    font-size: 12px;
    color: var(--text-secondary, #6b7280);
    margin: 4px 0 0;
    max-width: 68ch;
}

.sb2-slider {
    width: 100%;
}

.sb2-slider-value {
    display: inline-block;
    min-width: 20px;
    font-weight: 700;
    color: var(--primary, #4f46e5);
}

.sb2-checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}

.sb2-readonly-value {
    display: inline-block;
    padding: 6px 10px;
    border-radius: 6px;
    background: var(--bg-secondary, #f3f4f6);
    font-weight: 600;
}

.sb2-textarea {
    resize: vertical;
    min-height: 56px;
}

/* =================================================================
   PHONE
   ================================================================= */

@media (width <= 768px) {
    .sb2-readiness-cells {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .sb2-scene-item {
        flex-wrap: wrap;
    }

    .sb2-scene-content {
        flex-basis: 100%;
        order: 5;
    }

    .sb2-chip-row {
        flex-basis: 100%;
        order: 6;
    }

    .sb2-scene-actions {
        order: 7;
        margin-left: auto;
    }

    .sb2-control-right {
        margin-left: 0;
        width: 100%;
    }

    .sb2-control-right .btn {
        width: 100%;
    }

    .sb2-tabstrip {
        padding: 0 8px;
        overflow-x: auto;
        flex-wrap: nowrap;
    }

    .sb2-tab {
        white-space: nowrap;
    }

    .sb2-options-grid {
        grid-template-columns: 1fr;
    }
}