/* ============================================================
   CrossWord — study.css
   Phase 5: Study Mode layout, morphology table,
   Word Study Panel tabs and content areas.
   ============================================================ */

/* ── Study Mode toolbar ──────────────────────────────────── */
.study-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--sp-sm) var(--sp-md);
    background: var(--navy-deep);
    border-bottom: 1px solid rgba(201,168,76,0.2);
    position: sticky;
    top: 0;
    z-index: 10;
}

.study-toolbar-ref {
    font-family: var(--font-display);
    font-size: 0.78rem;
    letter-spacing: 0.06em;
    color: rgba(237,227,207,0.8);
}

.interlinear-toggle {
    display: flex;
    align-items: center;
    gap: var(--sp-xs);
    font-family: var(--font-display);
    font-size: 0.68rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: rgba(237,227,207,0.6);
    cursor: pointer;
    user-select: none;
}

.interlinear-toggle input[type="checkbox"] {
    accent-color: var(--gold);
    width: 14px;
    height: 14px;
    cursor: pointer;
}

/* ── Study text display ──────────────────────────────────── */
.study-text {
    padding: var(--sp-md);
    max-width: 680px;
    margin: 0 auto;
}

.study-verse-block {
    margin-bottom: var(--sp-xl);
    border-bottom: 1px solid var(--border-light);
    padding-bottom: var(--sp-lg);
}

.study-verse-block:last-child {
    border-bottom: none;
}

.study-verse-header {
    display: flex;
    align-items: center;
    gap: var(--sp-sm);
    margin-bottom: var(--sp-sm);
}

.study-verse-text {
    font-family: var(--font-greek);
    font-size: var(--reader-font-size, 18px);
    line-height: 2.4;
    margin-bottom: var(--sp-md);
}

/* ── Study tokens ────────────────────────────────────────── */
.study-token {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    border-radius: var(--r-sm);
    padding: 2px 3px;
    transition: background 0.15s;
    vertical-align: bottom;
    position: relative;
}

.study-token:hover,
.study-token:focus-visible {
    background: rgba(201,168,76,0.18);
    outline: none;
}

.study-token.selected {
    background: rgba(201,168,76,0.3);
}

.study-token-word {
    font-family: var(--font-greek);
    font-size: var(--reader-font-size, 18px);
    line-height: 1.2;
    color: var(--text-primary);
}

.study-token-gloss {
    font-family: var(--font-body);
    font-size: 0.65rem;
    color: var(--text-muted);
    line-height: 1;
    margin-top: 2px;
    text-align: center;
    max-width: 60px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Frequency underlines on study tokens */
.study-token[data-freq="high"] .study-token-word { border-bottom: 2px solid var(--freq-high); }
.study-token[data-freq="mid"]  .study-token-word { border-bottom: 2px solid var(--freq-mid); }
.study-token[data-freq="rare"] .study-token-word { border-bottom: 2px solid var(--freq-rare); }

/* Frequency dot (used in morph table) */
.freq-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
}
.freq-dot.freq-high { background: var(--freq-high); }
.freq-dot.freq-mid  { background: var(--freq-mid); }
.freq-dot.freq-rare { background: var(--freq-rare); }

/* ── Study morphology table (beneath each verse) ─────────── */
.study-morph-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin-top: var(--sp-sm);
}

.study-morph-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8rem;
    min-width: 460px;
}

.study-morph-table thead th {
    font-family: var(--font-display);
    font-size: 0.62rem;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    color: var(--text-muted);
    padding: 4px var(--sp-sm);
    border-bottom: 1px solid var(--border);
    text-align: left;
    white-space: nowrap;
}

.study-morph-table tbody tr:hover {
    background: var(--surface-raised);
}

.study-morph-table tbody td {
    padding: 5px var(--sp-sm);
    border-bottom: 1px solid var(--border-light);
    vertical-align: middle;
    color: var(--text-secondary);
}

.mt-word,
.mt-lemma {
    font-family: var(--font-greek);
    font-size: 0.95rem;
    color: var(--navy);
}

.mt-pos {
    font-style: italic;
    color: var(--text-muted);
}

.mt-gloss {
    color: var(--text-secondary);
}

/* ── Word Study Panel — shell ────────────────────────────── */
/* Panel shell styles live in main.css; only content overrides here */

.panel-section {
    padding: var(--sp-md);
    border-bottom: 1px solid var(--border-light);
}

.panel-section:last-child {
    border-bottom: none;
}

/* Word form + lemma display */
.panel-word-display {
    display: flex;
    align-items: baseline;
    gap: var(--sp-sm);
    margin-bottom: var(--sp-sm);
    flex-wrap: wrap;
}

.panel-word-form {
    font-family: var(--font-greek);
    font-size: 1.5rem;
    color: var(--text-secondary);
}

.panel-arrow {
    color: var(--border);
    font-size: 1rem;
}

.panel-lemma {
    font-family: var(--font-greek);
    font-size: 1.8rem;
    color: var(--navy);
    font-weight: 500;
}

.panel-gloss {
    font-size: 1rem;
    color: var(--text-secondary);
    margin: 0;
    font-style: italic;
}

/* Stats row */
.panel-stats-row {
    display: flex;
    gap: var(--sp-lg);
    flex-wrap: wrap;
}

.panel-stat {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.panel-stat-value {
    font-family: var(--font-display);
    font-size: 1.1rem;
    color: var(--navy);
    font-weight: 600;
}

.panel-stat-label {
    font-size: 0.68rem;
    font-family: var(--font-display);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-muted);
}

/* Frequency labels */
.freq-label-high { color: var(--freq-high); }
.freq-label-mid  { color: var(--freq-mid); }
.freq-label-rare { color: var(--freq-rare); }

/* Action buttons */
.panel-actions {
    display: flex;
    gap: var(--sp-sm);
    flex-wrap: wrap;
    align-items: center;
}

.panel-known-badge {
    font-family: var(--font-display);
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    color: var(--green);
}

/* Detail label/value pairs */
.panel-detail-label {
    font-family: var(--font-display);
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    display: block;
    margin-bottom: 4px;
}

.panel-detail-value {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Morphology table inside panel */
.morph-table {
    width: 100%;
    border-collapse: collapse;
}

.morph-label {
    font-family: var(--font-display);
    font-size: 0.68rem;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    color: var(--text-muted);
    padding: 7px var(--sp-sm) 7px 0;
    width: 42%;
    border-bottom: 1px solid var(--border-light);
    vertical-align: top;
}

.morph-value {
    font-size: 0.92rem;
    color: var(--text-primary);
    font-weight: 500;
    padding: 7px 0;
    border-bottom: 1px solid var(--border-light);
}

/* ── Occurrences tab ─────────────────────────────────────── */
.occ-book-list {
    display: flex;
    flex-direction: column;
    gap: var(--sp-md);
    max-height: 420px;
    overflow-y: auto;
}

.occ-book-group {}

.occ-book-name {
    font-family: var(--font-display);
    font-size: 0.72rem;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    color: var(--navy);
    margin-bottom: var(--sp-xs);
}

.occ-refs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-xs);
}

.occ-ref-chip {
    background: var(--surface-panel);
    border: 1px solid var(--border);
    border-radius: var(--r-pill);
    padding: 3px 10px;
    font-family: var(--font-display);
    font-size: 0.68rem;
    color: var(--navy-mid);
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}

.occ-ref-chip:hover {
    background: var(--parchment-mid);
    border-color: var(--gold-dark);
    color: var(--navy);
}

/* ── Roots tab ───────────────────────────────────────────── */
.root-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.root-row {
    display: flex;
    align-items: baseline;
    gap: var(--sp-sm);
    padding: 6px 0;
    border-bottom: 1px solid var(--border-light);
}

.root-row:last-child { border-bottom: none; }

.root-lemma {
    font-family: var(--font-greek);
    font-size: 1rem;
    color: var(--navy);
    min-width: 90px;
}

.root-gloss {
    flex: 1;
    font-size: 0.88rem;
    color: var(--text-secondary);
    font-style: italic;
}

.root-occ {
    font-family: var(--font-display);
    font-size: 0.65rem;
    color: var(--text-muted);
    flex-shrink: 0;
}