/* BOSSco Academy — Learner UI extensions.
 * Reuses CSS variables and primitives from /widget/frame.css.
 * Mobile-first; breakpoints at 640px (tablet) and 1024px (laptop). */

:root {
    --learner-max-width: 960px;
    --learner-gutter: 16px;
    --learner-card-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.06);
    --learner-card-shadow-hover: 0 2px 6px rgba(0,0,0,0.06), 0 8px 24px rgba(0,0,0,0.10);
    --accent-success: #16a34a;
    --accent-warn: #d97706;
    --accent-error: #dc2626;
    --solo-prestructural: #94a3b8;
    --solo-unistructural: #f59e0b;
    --solo-multistructural: #eab308;
    --solo-relational: #22c55e;
    --solo-extended: #2563eb;
}

.theme-dark {
    --learner-card-shadow: 0 1px 3px rgba(0,0,0,0.3), 0 4px 12px rgba(0,0,0,0.4);
    --learner-card-shadow-hover: 0 2px 6px rgba(0,0,0,0.4), 0 8px 24px rgba(0,0,0,0.5);
}

/* The learner pages are scrollable, unlike the widget frame. */
.learner-page,
.learner-page body {
    overflow: auto;
    height: auto;
    min-height: 100%;
}

body.learner-body {
    overflow: auto;
    background: var(--bg-secondary);
}

/* Page shell */
.learner-shell {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.learner-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 20;
}

.learner-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 15px;
    color: var(--text);
    text-decoration: none;
}

.learner-brand-mark {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 13px;
}

.learner-topbar-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.learner-iconbtn {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s, border-color 0.15s;
}

.learner-iconbtn:hover {
    background: var(--bg-secondary);
}

.learner-iconbtn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.learner-main {
    flex: 1;
    width: 100%;
    max-width: var(--learner-max-width);
    margin: 0 auto;
    padding: 16px var(--learner-gutter) 32px;
}

@media (min-width: 640px) {
    .learner-main {
        padding: 24px var(--learner-gutter) 48px;
    }
}

@media (min-width: 1024px) {
    .learner-main {
        padding: 32px var(--learner-gutter) 64px;
    }
}

/* Headings */
.learner-h1 {
    font-size: 22px;
    line-height: 1.25;
    font-weight: 700;
    margin: 0 0 6px;
    color: var(--text);
}

.learner-h1-sub {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.5;
    margin: 0 0 20px;
}

.learner-h2 {
    font-size: 16px;
    font-weight: 600;
    margin: 24px 0 12px;
    color: var(--text);
}

@media (min-width: 640px) {
    .learner-h1 { font-size: 28px; }
    .learner-h1-sub { font-size: 15px; margin-bottom: 24px; }
    .learner-h2 { font-size: 18px; margin: 32px 0 14px; }
}

/* Card */
.learner-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--learner-card-shadow);
}

@media (min-width: 640px) {
    .learner-card { padding: 20px; }
}

.learner-card-title {
    font-size: 15px;
    font-weight: 600;
    margin: 0 0 4px;
    color: var(--text);
}

.learner-card-sub {
    font-size: 13px;
    color: var(--text-secondary);
    margin: 0 0 14px;
    line-height: 1.5;
}

/* Buttons */
.learner-btn {
    appearance: none;
    border: 1px solid var(--primary);
    background: var(--primary);
    color: #fff;
    border-radius: 8px;
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 500;
    font-family: var(--font);
    cursor: pointer;
    min-height: 44px;
    transition: background 0.15s, border-color 0.15s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-decoration: none;
}

.learner-btn:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
.learner-btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.learner-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.learner-btn--secondary {
    background: var(--bg);
    color: var(--text);
    border-color: var(--border);
}

.learner-btn--secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--text-secondary);
}

.learner-btn--ghost {
    background: transparent;
    color: var(--text);
    border-color: transparent;
}

.learner-btn--ghost:hover { background: var(--bg-secondary); }

.learner-btn--block {
    width: 100%;
}

.learner-btn--lg {
    min-height: 52px;
    font-size: 15px;
    padding: 12px 20px;
}

.learner-btn-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* Inputs */
.learner-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 14px;
}

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

.learner-input,
.learner-select {
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    font-family: var(--font);
    color: var(--text);
    background: var(--bg);
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
    min-height: 44px;
}

.learner-input:focus,
.learner-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 15%, transparent);
}

/* Mode card grid */
.mode-grid {
    display: grid;
    gap: 14px;
    grid-template-columns: 1fr;
}

@media (min-width: 768px) {
    .mode-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 18px;
    }
}

.mode-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    box-shadow: var(--learner-card-shadow);
}

.mode-card-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: color-mix(in srgb, var(--primary) 12%, transparent);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.mode-card-title {
    font-size: 16px;
    font-weight: 600;
    margin: 0;
}

.mode-card-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0;
    flex: 1;
}

.mode-card-meta {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: -4px;
}

.social-row {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.divider {
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--text-secondary);
    font-size: 12px;
    margin: 8px 0;
    gap: 8px;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    border-top: 1px solid var(--border);
}

/* Library cards */
.material-grid {
    display: grid;
    gap: 12px;
    grid-template-columns: 1fr;
}

@media (min-width: 640px) {
    .material-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
}

@media (min-width: 1024px) {
    .material-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.material-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    box-shadow: var(--learner-card-shadow);
    transition: box-shadow 0.15s, transform 0.15s;
}

.material-card:hover {
    box-shadow: var(--learner-card-shadow-hover);
    transform: translateY(-1px);
}

.material-card-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 2px 8px;
    border-radius: 12px;
    align-self: flex-start;
}

.status-ready { background: color-mix(in srgb, var(--accent-success) 12%, transparent); color: var(--accent-success); }
.status-processing { background: color-mix(in srgb, var(--accent-warn) 12%, transparent); color: var(--accent-warn); }
.status-failed { background: color-mix(in srgb, var(--accent-error) 12%, transparent); color: var(--accent-error); }

.material-card-title {
    font-size: 15px;
    font-weight: 600;
    line-height: 1.35;
    margin: 0;
}

.material-card-meta {
    font-size: 12px;
    color: var(--text-secondary);
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.material-card-meta span::after {
    content: '·';
    margin-left: 8px;
    color: var(--border);
}

.material-card-meta span:last-child::after { content: ''; }

.material-card-actions {
    display: flex;
    gap: 8px;
    margin-top: auto;
    padding-top: 6px;
}

.material-card-lang {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-top: auto;
    padding-top: 6px;
}

.material-card-lang .learner-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
}

.learner-select--sm {
    min-height: 38px;
    padding: 7px 10px;
    font-size: 13px;
}

.material-card-lang + .material-card-actions {
    padding-top: 0;
    margin-top: 0;
}

/* Upload zone */
.upload-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 28px 16px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s;
    background: var(--bg);
}

.upload-zone:hover,
.upload-zone:focus-within {
    border-color: var(--primary);
    background: color-mix(in srgb, var(--primary) 4%, transparent);
}

.upload-zone-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: color-mix(in srgb, var(--primary) 12%, transparent);
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
}

.upload-zone-title {
    font-size: 14px;
    font-weight: 600;
    margin: 0 0 4px;
}

.upload-zone-sub {
    font-size: 12px;
    color: var(--text-secondary);
    margin: 0;
}

/* Pre-session config sheet */
.config-sheet {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    margin-top: 16px;
    box-shadow: var(--learner-card-shadow);
}

.config-row {
    display: grid;
    gap: 10px;
    grid-template-columns: 1fr;
    margin-bottom: 12px;
}

@media (min-width: 640px) {
    .config-row { grid-template-columns: repeat(2, 1fr); gap: 14px; }
}

/* ─── Live session overlays ───────────────────────────────────────────── */

.session-shell {
    display: flex;
    flex-direction: column;
    height: 100vh;
    height: 100dvh;
}

.session-header {
    padding: 10px 16px 8px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.session-meta-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 8px;
}

.session-meta {
    font-size: 12px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.session-meta strong { color: var(--text); }

.session-pill {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 3px 10px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.03em;
    color: var(--text-secondary);
}

.progress-track {
    width: 100%;
    height: 6px;
    background: var(--bg-secondary);
    border-radius: 999px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--primary);
    transition: width 0.4s ease;
}

.session-question {
    padding: 14px 16px 0;
    font-size: 16px;
    line-height: 1.5;
    color: var(--text);
    font-weight: 500;
}

@media (min-width: 640px) {
    .session-question { font-size: 18px; padding: 18px 24px 0; }
}

.session-transcript {
    flex: 1;
    overflow-y: auto;
    padding: 12px 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

@media (min-width: 640px) {
    .session-transcript { padding: 16px 24px; }
}

.session-controls {
    padding: 12px 16px 16px;
    background: var(--bg);
    border-top: 1px solid var(--border);
    flex-shrink: 0;
}

.mic-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.mic-btn {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    border: none;
    background: var(--primary);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 14px color-mix(in srgb, var(--primary) 40%, transparent);
    transition: transform 0.15s, background 0.15s, box-shadow 0.15s;
    flex-shrink: 0;
}

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

.mic-btn:active { transform: scale(0.96); }

.mic-btn--listening {
    animation: pulse 1.4s ease-in-out infinite;
    background: var(--accent-error);
    box-shadow: 0 4px 14px color-mix(in srgb, var(--accent-error) 40%, transparent);
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent-error) 50%, transparent); }
    50% { box-shadow: 0 0 0 12px color-mix(in srgb, var(--accent-error) 0%, transparent); }
}

.mic-state {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
    min-width: 0;
}

.mic-state-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
}

.mic-state-sub {
    font-size: 11px;
    color: var(--text-secondary);
}

.level-meter {
    display: flex;
    gap: 2px;
    height: 16px;
    align-items: end;
}

.level-meter span {
    width: 3px;
    background: var(--text-secondary);
    border-radius: 1px;
    opacity: 0.4;
}

.level-meter span.active { opacity: 1; background: var(--primary); }

.session-actions {
    display: flex;
    gap: 6px;
    margin-top: 10px;
    overflow-x: auto;
    scrollbar-width: none;
}

.session-actions::-webkit-scrollbar { display: none; }

.session-actions .learner-btn {
    flex: 1 0 auto;
    min-height: 40px;
    font-size: 13px;
    padding: 6px 12px;
}

@media (min-width: 1024px) {
    .session-shell {
        max-width: 1100px;
        margin: 0 auto;
        display: grid;
        grid-template-columns: 1.2fr 1fr;
        grid-template-rows: auto 1fr auto;
        grid-template-areas:
            "header header"
            "transcript controls"
            "transcript controls";
        gap: 0;
        background: var(--bg);
    }
    .session-header { grid-area: header; }
    .session-question { grid-area: header; padding-top: 0; }
    .session-transcript { grid-area: transcript; border-right: 1px solid var(--border); }
    .session-controls {
        grid-area: controls;
        border-top: none;
        border-left: none;
        padding: 24px;
    }
}

/* Final score reveal */
.score-card {
    background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 6%, var(--bg)), var(--bg));
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
    box-shadow: var(--learner-card-shadow);
}

.score-big {
    font-size: 56px;
    line-height: 1;
    font-weight: 800;
    color: var(--primary);
    margin: 4px 0;
    letter-spacing: -0.02em;
}

@media (min-width: 640px) {
    .score-big { font-size: 72px; }
}

.score-band {
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
    color: var(--text-secondary);
}

.score-recommendation {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text);
    margin: 16px 0 0;
}

/* ─── Results detail ──────────────────────────────────────────────────── */

.results-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

@media (min-width: 1024px) {
    .results-layout {
        grid-template-columns: 340px 1fr;
        gap: 24px;
        align-items: start;
    }
}

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

.result-row {
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 12px 14px;
    background: var(--bg);
    text-align: left;
    cursor: pointer;
    font-family: var(--font);
    color: var(--text);
    transition: border-color 0.15s, background 0.15s;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.result-row:hover { border-color: var(--text-secondary); background: var(--bg-secondary); }

.result-row[aria-selected="true"] {
    border-color: var(--primary);
    background: color-mix(in srgb, var(--primary) 6%, transparent);
}

.result-row-main {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.result-row-title {
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.result-row-meta {
    font-size: 11px;
    color: var(--text-secondary);
}

.result-row-score {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
    flex-shrink: 0;
}

.detail-grid {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(2, 1fr);
    margin-top: 12px;
}

@media (min-width: 640px) {
    .detail-grid { grid-template-columns: repeat(4, 1fr); }
}

.detail-tile {
    background: var(--bg-secondary);
    border-radius: 10px;
    padding: 12px;
    text-align: center;
}

.detail-tile-num {
    font-size: 22px;
    font-weight: 700;
    color: var(--text);
    line-height: 1.1;
}

.detail-tile-label {
    font-size: 11px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-top: 4px;
}

/* SOLO/Bloom chips */
.chip {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 3px 9px;
    border-radius: 999px;
    background: var(--bg-secondary);
    color: var(--text);
    border: 1px solid var(--border);
}

.chip-solo-prestructural { background: color-mix(in srgb, var(--solo-prestructural) 18%, transparent); color: #475569; border-color: transparent; }
.chip-solo-unistructural { background: color-mix(in srgb, var(--solo-unistructural) 18%, transparent); color: #92400e; border-color: transparent; }
.chip-solo-multistructural { background: color-mix(in srgb, var(--solo-multistructural) 22%, transparent); color: #854d0e; border-color: transparent; }
.chip-solo-relational { background: color-mix(in srgb, var(--solo-relational) 18%, transparent); color: #15803d; border-color: transparent; }
.chip-solo-extended { background: color-mix(in srgb, var(--solo-extended) 14%, transparent); color: #1d4ed8; border-color: transparent; }

.theme-dark .chip-solo-prestructural { color: #cbd5e1; }
.theme-dark .chip-solo-unistructural { color: #fde68a; }
.theme-dark .chip-solo-multistructural { color: #fef08a; }
.theme-dark .chip-solo-relational { color: #86efac; }
.theme-dark .chip-solo-extended { color: #93c5fd; }

.question-row {
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 12px 14px;
    background: var(--bg);
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.question-row-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    flex-wrap: wrap;
}

.question-row-num {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.question-row-text {
    font-size: 13px;
    color: var(--text);
    line-height: 1.5;
    margin: 0;
}

.bloom-bar {
    display: flex;
    gap: 4px;
    margin-top: 4px;
    height: 8px;
    border-radius: 999px;
    overflow: hidden;
}

.bloom-bar span {
    height: 100%;
    background: var(--primary);
    opacity: 0.85;
}

.bloom-bar span:nth-child(1) { opacity: 0.4; }
.bloom-bar span:nth-child(2) { opacity: 0.55; }
.bloom-bar span:nth-child(3) { opacity: 0.7; }
.bloom-bar span:nth-child(4) { opacity: 0.85; }
.bloom-bar span:nth-child(5) { opacity: 1.0; }

.bloom-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 6px;
}

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

.bloom-legend-swatch {
    width: 10px;
    height: 10px;
    border-radius: 2px;
    background: var(--primary);
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 32px 16px;
    color: var(--text-secondary);
}

.empty-state svg {
    color: var(--text-secondary);
    opacity: 0.5;
    margin-bottom: 10px;
}

.empty-state-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    margin: 0 0 4px;
}

.empty-state-sub {
    font-size: 13px;
    line-height: 1.5;
    margin: 0 0 14px;
}

/* Footer note */
.learner-footnote {
    text-align: center;
    font-size: 11px;
    color: var(--text-secondary);
    padding: 16px;
    margin-top: 24px;
}

.learner-footnote a { color: var(--primary); text-decoration: none; }
.learner-footnote a:hover { text-decoration: underline; }