/* ===== Reset + base ===== */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: #1f2937;
    background: #f3f4f6;
    line-height: 1.5;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

/* =========================
   LIBRARY PAGE (index.php)
   ========================= */
.hero {
    background: linear-gradient(135deg, #1e3a8a 0%, #6d28d9 60%, #be185d 100%);
    color: #fff;
    padding: 3rem 1.5rem 2.5rem;
}
.hero-inner { max-width: 1100px; margin: 0 auto; }
.hero h1 { margin: 0 0 0.5rem; font-size: 2.2rem; font-weight: 700; letter-spacing: -0.5px; }
.hero p  { margin: 0 0 1.5rem; opacity: 0.9; max-width: 720px; }
.hero strong { color: #fde68a; }

.hero-stats { display: flex; gap: 0.7rem; flex-wrap: wrap; }
.stat-pill {
    background: rgba(255,255,255,0.13);
    border: 1px solid rgba(255,255,255,0.25);
    padding: 0.55rem 1rem;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    backdrop-filter: blur(6px);
    transition: all 0.15s;
}
.stat-pill:hover { background: rgba(255,255,255,0.25); transform: translateY(-1px); }
.stat-pill.active { background: #fff; color: #1e3a8a; }
.stat-name { font-weight: 600; font-size: 0.9rem; text-transform: capitalize; }
.stat-num  { font-size: 0.85rem; opacity: 0.85; }

.filters {
    max-width: 1100px;
    margin: -1.5rem auto 0;
    padding: 1rem 1.5rem;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
    position: relative;
    z-index: 2;
}
.filter-form { display: flex; gap: 0.6rem; flex-wrap: wrap; align-items: center; }
.filter-form input,
.filter-form select {
    padding: 0.55rem 0.8rem;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font-size: 0.95rem;
    background: #fff;
}
.filter-form input[type=search] { flex: 1; min-width: 220px; }
.filter-form input:focus,
.filter-form select:focus { outline: none; border-color: #6366f1; box-shadow: 0 0 0 3px rgba(99,102,241,0.15); }
.filter-form button {
    background: #4f46e5;
    color: #fff;
    border: 0;
    padding: 0.55rem 1.2rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s;
}
.filter-form button:hover { background: #4338ca; }
.filter-form .reset { color: #b91c1c; padding: 0.55rem 0.6rem; font-size: 0.9rem; }
.filter-form .reset:hover { text-decoration: underline; }

.lesson-grid { max-width: 1100px; margin: 2rem auto; padding: 0 1.5rem 3rem; }
.tag-section { margin-bottom: 2.5rem; }
.tag-heading {
    font-size: 1.15rem;
    color: #374151;
    margin: 0 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #e5e7eb;
}
.tag-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1rem; }

.lesson-card {
    background: #fff;
    border-radius: 12px;
    padding: 1.1rem;
    border: 1px solid #e5e7eb;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
    position: relative;
    overflow: hidden;
}
.lesson-card::before {
    content: '';
    position: absolute;
    inset: 0 0 auto 0;
    height: 3px;
    background: var(--accent, #6366f1);
    opacity: 0;
    transition: opacity 0.15s;
}
.lesson-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.08);
    border-color: var(--accent, #6366f1);
}
.lesson-card:hover::before { opacity: 1; }

.cat-badge {
    align-self: flex-start;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.6px;
    padding: 0.18rem 0.6rem;
    border-radius: 999px;
    color: #fff;
    text-transform: uppercase;
    background: #6b7280;
}
.cat-badge.cat-ielts,              .cat-ielts             { --accent: #dc2626; }
.cat-badge.cat-daily-life-stories, .cat-daily-life-stories { --accent: #16a34a; }
.cat-badge.cat-oxford-3000,        .cat-oxford-3000       { --accent: #2563eb; }
.cat-badge.cat-ielts              { background: #dc2626; }
.cat-badge.cat-daily-life-stories { background: #16a34a; }
.cat-badge.cat-oxford-3000        { background: #2563eb; }

.lesson-title { margin: 0; font-size: 1rem; font-weight: 600; color: #111827; line-height: 1.3; }
.lesson-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: 0.5rem;
    font-size: 0.85rem;
    color: #6b7280;
}
.play-cta {
    color: var(--accent, #4f46e5);
    font-weight: 600;
    transition: transform 0.15s;
}
.lesson-card:hover .play-cta { transform: translateX(2px); }

.empty {
    text-align: center;
    padding: 3rem;
    color: #6b7280;
    background: #fff;
    border-radius: 12px;
    border: 2px dashed #d1d5db;
}
.empty pre { background: #f3f4f6; padding: 0.5rem 1rem; display: inline-block; border-radius: 6px; margin: 0.3rem; }

.page-footer {
    text-align: center;
    padding: 1.5rem;
    color: #9ca3af;
    font-size: 0.85rem;
}
.page-footer a { color: #4f46e5; text-decoration: underline; }


/* =========================
   PRACTICE PAGE (practice.php)
   ========================= */
.practice-page { background: #f9fafb; }

.topbar {
    max-width: 880px;
    margin: 0 auto;
    padding: 1rem 1.5rem 0;
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
}
.topbar a { color: #4f46e5; }
.topbar a:hover { text-decoration: underline; }

.practice-shell { max-width: 880px; margin: 0 auto; padding: 1rem 1.5rem 4rem; }

.practice-head { text-align: center; margin: 1.5rem 0 1.2rem; }
.practice-head h1 {
    margin: 0 0 0.5rem;
    font-size: 2rem;
    font-weight: 700;
    color: #111827;
    letter-spacing: -0.5px;
}
.practice-sub {
    margin: 0;
    color: #6b7280;
    font-size: 0.95rem;
}
.practice-sub em { color: #ec4899; font-style: italic; font-weight: 500; }
.tag-pill {
    display: inline-block;
    background: #eef2ff;
    color: #4338ca;
    padding: 0.1rem 0.6rem;
    border-radius: 999px;
    font-size: 0.8rem;
    margin: 0 0.2rem;
}

.audio-bar {
    width: 100%;
    margin: 1rem 0 0.8rem;
    border-radius: 12px;
}

.mode-row { display: flex; gap: 1.5rem; margin: 0.5rem 0; flex-wrap: wrap; align-items: center; }
.mode-label { color: #374151; font-size: 0.95rem; font-weight: 500; }
.mode-label select {
    margin-left: 0.4rem;
    padding: 0.4rem 0.6rem;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    background: #fff;
    font-family: inherit;
    font-size: 0.95rem;
}

.counter-row {
    text-align: center;
    margin: 1rem 0 0.6rem;
    font-size: 1.4rem;
    font-weight: 700;
    color: #1f2937;
}
.counter-row .muted { color: #9ca3af; font-weight: 400; margin: 0 0.3rem; }

.dictation-card {
    background: #fff;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.04);
    position: relative;
}
.speaker-chip {
    position: absolute;
    top: -10px;
    left: 16px;
    background: #1f2937;
    color: #fff;
    padding: 0.2rem 0.7rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 500;
    min-height: 1.4rem;
    display: none;
}
.speaker-chip.show { display: inline-block; }

.display {
    border: 2px dashed #cbd5e1;
    border-radius: 10px;
    padding: 1.8rem 1rem;
    min-height: 130px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 0.4rem;
    font-size: 1.35rem;
    color: #1f2937;
    line-height: 1.7;
    text-align: center;
    transition: border-color 0.2s, background 0.2s;
}

/* phase messages */
.phase-msg {
    width: 100%;
    text-align: center;
    color: #6b7280;
    font-size: 1rem;
    padding: 0.5rem 0;
}
.phase-msg .big-icon { font-size: 2.5rem; margin-bottom: 0.6rem; }
.phase-msg p { margin: 0.3rem 0; }
.phase-msg kbd {
    display: inline-block;
    background: #16a34a;
    color: #fff;
    padding: 0.15rem 0.6rem;
    border: 0;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.9rem;
    font-family: inherit;
}
.phase-idle      { color: #4b5563; }
.phase-listening { color: #2563eb; }
.phase-listening .big-icon { animation: spin 2s ease-in-out infinite; }
@keyframes spin {
    0%, 100% { transform: scale(1); }
    50%      { transform: scale(1.15) rotate(-5deg); }
}
.full-line { width: 100%; }
.phase-tip {
    width: 100%;
    margin-top: 0.8rem;
    padding-top: 0.8rem;
    border-top: 1px solid #e5e7eb;
    color: #16a34a;
    font-size: 0.95rem;
    font-weight: 500;
}
.retry-btn {
    display: inline-block;
    margin-top: 0.8rem;
    border: 1px solid #d1d5db;
    background: #fff;
    color: #374151;
    padding: 0.4rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.15s;
}
.retry-btn:hover { background: #fef3c7; border-color: #f59e0b; color: #92400e; }

.dictation-card:has(.phase-listening) .display { border-color: #2563eb; background: #eff6ff; }
.dictation-card:has(.phase-msg.phase-idle) .display { border-color: #cbd5e1; background: #f9fafb; }
.dictation-card:has(.full-line) .display { border-color: #16a34a; background: #f0fdf4; }
.tok            { display: inline-block; }
.tok-revealed   { color: #1f2937; }
.tok-blank      {
    color: #4b5563;
    font-family: "JetBrains Mono", "Consolas", monospace;
    font-weight: 600;
    letter-spacing: 1px;
}
.tok-blank.current {
    background: #fef3c7;
    color: #92400e;
    padding: 0.1rem 0.5rem;
    border-radius: 6px;
    box-shadow: 0 0 0 2px #fbbf24;
    animation: pulse 1.5s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 2px #fbbf24; }
    50%      { box-shadow: 0 0 0 4px #fcd34d; }
}
.tok-correct {
    color: #16a34a;
    background: #dcfce7;
    padding: 0.05rem 0.4rem;
    border-radius: 5px;
}
.tok-wrong {
    color: #dc2626;
    background: #fee2e2;
    padding: 0.05rem 0.4rem;
    border-radius: 5px;
    text-decoration: line-through;
}
.tok-answer {
    color: #ea580c;
    background: #fff7ed;
    padding: 0.1rem 0.5rem;
    border-radius: 6px;
    border: 2px solid #fb923c;
    font-weight: 700;
    animation: answer-flash 0.4s ease;
}
@keyframes answer-flash {
    0%   { transform: scale(1.2); }
    100% { transform: scale(1); }
}

#user-input {
    width: 100%;
    margin-top: 1rem;
    border: 2px solid #e5e7eb;
    border-radius: 10px;
    padding: 0.9rem 1.1rem;
    font-size: 1.15rem;
    font-family: inherit;
    background: #f9fafb;
    transition: all 0.15s;
}
#user-input:focus {
    outline: none;
    border-color: #6366f1;
    background: #fff;
    box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}

.score-line {
    text-align: center;
    margin: 1.2rem 0 0.8rem;
    font-size: 1rem;
    color: #374151;
}
.score-line strong { color: #16a34a; font-size: 1.1rem; }

.control-row {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin: 0.5rem 0 1rem;
}
.control-group { display: flex; gap: 0.5rem; }

.btn {
    border: 0;
    height: 44px;
    padding: 0 1rem;
    border-radius: 10px;
    cursor: pointer;
    color: #fff;
    font-size: 0.95rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: transform 0.1s, box-shadow 0.15s, opacity 0.15s, background 0.15s;
    box-shadow: 0 2px 6px rgba(0,0,0,0.12);
    white-space: nowrap;
}
.btn:hover    { transform: translateY(-1px); box-shadow: 0 4px 10px rgba(0,0,0,0.18); }
.btn:active   { transform: translateY(0); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: none; }
.btn.dark   { background: #374151; }
.btn.dark:hover   { background: #1f2937; }
.btn.orange { background: #ea580c; }
.btn.orange:hover { background: #c2410c; }
.btn.purple { background: #7c3aed; }
.btn.purple:hover { background: #6d28d9; }
.btn.blue   { background: #2563eb; }
.btn.blue:hover   { background: #1d4ed8; }
.btn.green  { background: #16a34a; }
.btn.green:hover  { background: #15803d; }
.btn .icon  { font-size: 1.1rem; line-height: 1; }
.btn .label { line-height: 1; }
@media (max-width: 600px) {
    .btn { padding: 0 0.7rem; height: 40px; font-size: 0.85rem; }
    .btn .label { display: none; }
}

.result {
    min-height: 1.5rem;
    margin: 0.6rem 0 1rem;
    text-align: center;
    font-size: 0.95rem;
    color: #6b7280;
}
.result.ok   { color: #16a34a; font-weight: 600; }
.result.fail { color: #dc2626; font-weight: 600; }

.show-transcript, .shortcuts {
    background: #fff;
    border-radius: 10px;
    padding: 0.8rem 1.2rem;
    margin: 1rem 0;
    border: 1px solid #e5e7eb;
}
.show-transcript summary, .shortcuts summary {
    cursor: pointer;
    font-weight: 500;
    color: #374151;
    user-select: none;
}
.show-transcript[open] summary, .shortcuts[open] summary {
    margin-bottom: 0.8rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #e5e7eb;
}
#full-transcript .ft-line {
    padding: 0.5rem 0.6rem;
    border-radius: 6px;
    cursor: pointer;
    line-height: 1.6;
    transition: background 0.1s;
}
#full-transcript .ft-line:hover { background: #f9fafb; }
#full-transcript .ft-line.active { background: #fef3c7; }
#full-transcript .ft-speaker {
    display: inline-block;
    background: #e5e7eb;
    color: #374151;
    padding: 0.05rem 0.5rem;
    border-radius: 999px;
    font-size: 0.75rem;
    margin-right: 0.5rem;
}

.shortcuts ul { margin: 0; padding-left: 1.2rem; color: #6b7280; }
.shortcuts li { margin: 0.3rem 0; font-size: 0.9rem; }
kbd {
    background: #f3f4f6;
    border: 1px solid #d1d5db;
    border-bottom-width: 2px;
    padding: 0.05rem 0.4rem;
    border-radius: 4px;
    font-family: "JetBrains Mono", Consolas, monospace;
    font-size: 0.8rem;
    color: #1f2937;
}

/* progress bar */
.progress-wrap {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    margin: 0.6rem 0 1rem;
    padding: 0 0.2rem;
}
.progress-track {
    flex: 1;
    height: 8px;
    background: #e5e7eb;
    border-radius: 999px;
    overflow: hidden;
}
.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #16a34a, #22c55e);
    border-radius: 999px;
    transition: width 0.4s ease;
}
.progress-text {
    font-size: 0.85rem;
    color: #374151;
    font-weight: 600;
    white-space: nowrap;
}
.btn-reset {
    border: 1px solid #d1d5db;
    background: #fff;
    color: #6b7280;
    padding: 0.25rem 0.7rem;
    border-radius: 6px;
    font-size: 0.8rem;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.15s;
}
.btn-reset:hover { background: #fee2e2; color: #dc2626; border-color: #dc2626; }

/* transcript completed marks */
.ft-status { font-size: 0.8rem; min-width: 1.3rem; display: inline-block; }
#full-transcript .ft-line.ft-done { opacity: 0.7; }
#full-transcript .ft-line.ft-done .ft-text { text-decoration: line-through; color: #6b7280; }
#full-transcript .ft-line.ft-done.active { opacity: 1; }

.score-line .score-label { color: #6b7280; }
.control-row { gap: 0.5rem; }
.control-group { flex-wrap: wrap; }
#user-input:disabled {
    background: #f3f4f6;
    color: #9ca3af;
    cursor: not-allowed;
}

@media (max-width: 600px) {
    .hero h1 { font-size: 1.6rem; }
    .practice-head h1 { font-size: 1.4rem; }
    .display { font-size: 1.1rem; padding: 1.2rem 0.5rem; min-height: 110px; }
    .phase-msg .big-icon { font-size: 2rem; }
}