/* ================================================================
   memorize.css — Word Memorization Hub (session + hub modes)
   ================================================================ */

:root {
    --primary:       #6366f1;
    --primary-hover: #4f46e5;
    --success:       #10b981;
    --success-hover: #047857;
    --danger:        #ef4444;
    --surface:       #f9fafb;
    --card-bg:       #ffffff;
    --border:        #e5e7eb;
    --text:          #111827;
    --text-muted:    #6b7280;
    --sidebar-w:     220px;
    --header-h:      60px;
}

/* ── Reset ── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, sans-serif;
    background: var(--surface);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.5;
}

@media (min-width: 769px) {
    body {
        background: #1a1a2e url(/icons/stars.jpg) center center / cover no-repeat fixed;
    }
}

/* ── Wrapper ── */
.mem-wrap {
    max-width: 1280px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ================================================================
   HEADER
   ================================================================ */
.mem-header {
    height: var(--header-h);
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 12px;
    padding: 0 20px;
    background: linear-gradient(to bottom, #fff 0%, #fafbfc 100%);
    border-bottom: 1px solid var(--border);
    border-radius: 0 0 12px 12px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.06);
    position: sticky;
    top: 0;
    z-index: 200;
}

.back-btn {
    justify-self: start;
    background: var(--success);
    color: #fff;
    border: none;
    padding: 7px 14px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: background 0.15s, transform 0.15s;
}
.back-btn:hover { background: var(--success-hover); transform: translateY(-1px); }

.mem-title {
    justify-self: center;
    font-size: 1.2rem;
    font-weight: 700;
    color: #dc2626; /* Red - Word Memorization */
    white-space: nowrap;
}

.session-badge {
    justify-self: end;
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
    background: #f3f4f6;
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 3px 10px;
    max-width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ================================================================
   MAIN LAYOUT
   ================================================================ */
.mem-main {
    flex: 1;
    display: flex;
    overflow: hidden;
    padding: 16px;
    gap: 16px;
}

/* ================================================================
   LANGUAGE SIDEBAR (hub mode only)
   ================================================================ */
.lang-sidebar {
    width: var(--sidebar-w);
    flex-shrink: 0;
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.07);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    align-self: flex-start;
    position: sticky;
    top: calc(var(--header-h) + 16px);
    max-height: calc(100vh - var(--header-h) - 48px);
}

.lang-sidebar-title {
    padding: 14px 16px 10px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
}

.lang-list {
    overflow-y: auto;
    flex: 1;
    padding: 6px;
}

.lang-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 9px 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.12s;
    margin-bottom: 2px;
}
.lang-item:hover { background: #f3f4f6; }
.lang-item.active {
    background: linear-gradient(135deg, #ede9fe 0%, #dbeafe 100%);
    color: var(--primary);
}

.lang-name {
    font-size: 14px;
    font-weight: 500;
}

.lang-count {
    font-size: 12px;
    font-weight: 600;
    background: #e5e7eb;
    color: var(--text-muted);
    border-radius: 12px;
    padding: 1px 8px;
    min-width: 24px;
    text-align: center;
}
.lang-item.active .lang-count {
    background: #c7d2fe;
    color: var(--primary);
}

/* ================================================================
   CONTENT AREA
   ================================================================ */
.mem-content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

/* ── Shared state blocks ── */
.mem-state {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 1rem;
    text-align: center;
}

.mem-loading .spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 1rem;
}
@keyframes spin { to { transform: rotate(360deg); } }
.mem-loading p { color: var(--text-muted); font-size: 14px; }

.mem-prompt .prompt-icon,
.mem-empty .empty-icon { font-size: 3rem; margin-bottom: 1rem; }
.mem-prompt p { color: var(--text-muted); font-size: 15px; max-width: 280px; }
.mem-empty h2 { color: var(--text); margin-bottom: 0.5rem; }
.mem-empty p  { color: var(--text-muted); margin-bottom: 1.5rem; max-width: 320px; }

.return-btn {
    background: var(--primary);
    color: #fff;
    border: none;
    padding: 10px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s;
}
.return-btn:hover { background: var(--primary-hover); }

/* ================================================================
   WORD LIST
   ================================================================ */
.word-list-stats {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
    padding: 0 4px 10px;
}

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

/* ── Common word row ── */
.word-row {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 12px 16px;
    cursor: pointer;
    transition: box-shadow 0.15s, transform 0.12s, border-color 0.15s;
}
.word-row:hover {
    box-shadow: 0 3px 10px rgba(0,0,0,0.09);
    transform: translateY(-1px);
    border-color: #c7d2fe;
}
.word-row.word-mastered {
    opacity: 0.55;
    cursor: default;
}
.word-row.word-mastered:hover {
    box-shadow: none;
    transform: none;
    border-color: var(--border);
}

.word-row-main {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 6px;
}
.word-row-main:last-child { margin-bottom: 0; }

.word-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
}

.word-lang-tag {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.06em;
    background: #e0e7ff;
    color: var(--primary);
    border-radius: 4px;
    padding: 2px 6px;
}

.mastered-badge {
    font-size: 10px;
    font-weight: 600;
    background: #d1fae5;
    color: var(--success);
    border-radius: 4px;
    padding: 2px 7px;
    margin-left: auto;
}

/* ── Context snippet (session mode and hub mode rows) ── */
.word-context-snippet {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.4;
    margin-top: 2px;
}

/* ── Hub mode rank bar ── */
.word-row-meta {
    display: flex;
    align-items: center;
    gap: 10px;
}

.rank-bar-wrap {
    flex: 1;
    height: 5px;
    background: #e5e7eb;
    border-radius: 3px;
    overflow: hidden;
}

.rank-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary) 0%, #8b5cf6 100%);
    border-radius: 3px;
    transition: width 0.3s ease;
}

.rank-stats {
    font-size: 11px;
    color: var(--text-muted);
    white-space: nowrap;
}

/* ── Section divider (mastered words) ── */
.word-list-divider {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--text-muted);
    padding: 10px 4px 4px;
}

/* ================================================================
   PRACTICE PANEL
   ================================================================ */
.practice-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border);
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    overflow: hidden;
}

/* ── Practice header ── */
.practice-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    border-bottom: 1px solid var(--border);
    background: #fafbfc;
    flex-shrink: 0;
}

.practice-back-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    padding: 6px 12px;
    border-radius: 7px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: background 0.12s;
    flex-shrink: 0;
}
.practice-back-btn:hover { background: #f3f4f6; }

.practice-word-info {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}

.practice-big-word {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.practice-lang-tag {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.06em;
    background: #e0e7ff;
    color: var(--primary);
    border-radius: 5px;
    padding: 3px 8px;
    flex-shrink: 0;
}

.speak-btn {
    background: var(--success);
    color: #fff;
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: background 0.15s;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 5px;
}
.speak-btn:hover  { background: var(--success-hover); }
.speak-btn.loading { background: #9ca3af; cursor: not-allowed; }
.speak-btn.playing { background: #dc2626; }
.speak-btn.paused  { background: #f59e0b; }

/* ── Progress bar inside practice panel ── */
.practice-progress {
    padding: 10px 18px 8px;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
    border-bottom: 1px solid var(--border);
}

.practice-progress-track {
    flex: 1;
    height: 6px;
    background: #e5e7eb;
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary) 0%, #8b5cf6 100%);
    transition: width 0.3s ease;
}

.practice-progress-label {
    font-size: 12px;
    color: var(--text-muted);
    white-space: nowrap;
    flex-shrink: 0;
}

/* ── Context display (current context text shown above recall history) ── */
.practice-context-display {
    padding: 12px 18px;
    background: #fffbeb;
    border-bottom: 1px solid #fde68a;
    flex-shrink: 0;
}

.context-display-label {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: #92400e;
    margin-bottom: 4px;
}

.context-display-text {
    font-size: 15px;
    color: #1c1917;
    line-height: 1.5;
    font-style: italic;
}

/* ── Recall history area ── */
.practice-recall-area {
    flex: 1;
    display: flex !important;   /* override yesterday.js inline style */
    flex-direction: column;
    overflow: hidden;
    /* Override yesterday.css fixed positioning */
    position: static !important;
    top: auto !important;
    right: auto !important;
    width: 100% !important;
    max-height: none !important;
    border: none !important;
    border-top: 1px solid var(--border) !important;
    box-shadow: none !important;
    border-radius: 0 !important;
}

.practice-recall-header {
    padding: 8px 18px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--text-muted);
    background: #fafbfc;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

/* Override yesterday.css padding on the scroll area */
.practice-recall-scroll.yesterday-results-content {
    flex: 1;
    overflow-y: auto;
    padding: 14px 18px;
}

/* ── Action buttons ── */
.practice-actions {
    display: flex;
    gap: 12px;
    padding: 14px 18px;
    border-top: 1px solid var(--border);
    background: #fafbfc;
    flex-shrink: 0;
}

.know-btn, .next-btn {
    flex: 1;
    padding: 12px 18px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: background 0.15s, transform 0.12s;
}
.know-btn {
    background: var(--success);
    color: #fff;
}
.know-btn:hover { background: var(--success-hover); transform: translateY(-1px); }
.know-btn:disabled { background: #9ca3af; cursor: not-allowed; transform: none; }

.next-btn {
    background: var(--primary);
    color: #fff;
}
.next-btn:hover { background: var(--primary-hover); transform: translateY(-1px); }

/* ── Floating Buttons ── */
.floating-buttons-container {
    position: fixed;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 16px;
    z-index: 100;
}

.floating-action-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    font-weight: 800;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 6px rgba(0,0,0,0.2);
    transition: transform 0.15s, box-shadow 0.15s;
}
.floating-action-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 8px rgba(0,0,0,0.3);
}

.floating-action-btn.know {
    background: var(--success);
    color: white;
}
.floating-action-btn.know:hover {
    background: var(--success-hover);
}
.floating-action-btn.know:active {
    transform: translateY(1px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.floating-action-btn.skip {
    background: var(--primary);
    color: white;
}
.floating-action-btn.skip:hover {
    background: var(--primary-hover);
}
.floating-action-btn.skip:active {
    transform: translateY(1px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

/* RTL support for word content (ar, he per commons/lang.js) */
.word-text.rtl-text,
.practice-big-word.rtl-text,
.context-display-text.rtl-text,
.word-context-snippet.rtl-text {
    direction: rtl;
    text-align: right;
}

/* RTL context: explicit wrapper forces block direction (overrides LTR-first content like "Norwegian"/"German") */
.context-rtl-inner {
    direction: rtl;
    text-align: right;
}

.context-lang-label {
    direction: ltr;
    unicode-bidi: isolate;
    display: inline-block;
}

/* Translation spans: isolate LTR from RTL flow to prevent bidi reordering */
#contextText .translation {
    unicode-bidi: isolate;
    direction: ltr;
}

/* Word-grabber HTML format (words-translator-output structure) */
#contextText .words-translator-wrap .words-translator-output {
    margin: 0.5em 0;
}
#contextText .words-translator-wrap .words-translator-output h3 {
    font-size: 0.95em;
    margin: 0.75em 0 0.25em 0;
    color: var(--text, #111827);
}
#contextText .words-translator-wrap .words-translator-output p {
    margin: 0 0 0.5em 0;
    line-height: 1.5;
}
#contextText .words-translator-wrap .translation {
    background-color: #2c5282;
    padding: 2px 4px;
    border-radius: 3px;
    font-weight: 500;
    color: #e6f3ff;
}

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 768px) {
    .mem-main {
        flex-direction: column;
        padding: 10px;
        gap: 10px;
    }

    /* Sidebar becomes horizontal strip on mobile */
    .lang-sidebar {
        width: 100%;
        position: static;
        max-height: none;
        border-radius: 10px;
    }
    .lang-list {
        display: flex;
        flex-direction: row;
        overflow-x: auto;
        padding: 6px;
        gap: 4px;
    }
    .lang-item {
        flex-shrink: 0;
        margin-bottom: 0;
    }

    .mem-header { padding: 0 12px; }
    .mem-title  { font-size: 1rem; }
    .back-btn   { padding: 6px 10px; font-size: 12px; }
    .session-badge { display: none !important; }

    .practice-header { padding: 10px 12px; gap: 8px; }
    .practice-big-word { font-size: 1.4rem; }
    .practice-actions { flex-direction: column; padding: 10px 12px; gap: 8px; }
    .know-btn, .next-btn { padding: 10px; }
}

@media (max-width: 480px) {
    .mem-main { padding: 8px; }
    .word-row  { padding: 10px 12px; }
    .word-text { font-size: 16px; }
}

/* RTL support for word content (ar, he per commons/lang.js) */
.word-text.rtl-text,
.practice-big-word.rtl-text,
.context-display-text.rtl-text,
.word-context-snippet.rtl-text {
    direction: rtl;
    text-align: right;
}