/* ─── Reset & Base ──────────────────────────────────────────── */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg: #F5F5F7;
    --bg-card: #FFFFFF;
    --text: #1A1A2E;
    --text-secondary: #6B7280;
    --primary: #6C5CE7;
    --primary-light: #A29BFE;
    --primary-bg: #EDE9FE;
    --accent-green: #00B894;
    --accent-orange: #FDCB6E;
    --accent-red: #E17055;
    --accent-blue: #74B9FF;
    --border: #E5E7EB;
    --nav-bg: #FFFFFF;
    --shadow: 0 2px 12px rgba(0,0,0,0.08);
    --radius: 16px;
    --radius-sm: 12px;
    --transition: 0.2s ease;
}

.dark {
    --bg: #0F0F1A;
    --bg-card: #1A1A2E;
    --text: #F0F0F0;
    --text-secondary: #9CA3AF;
    --primary: #A29BFE;
    --primary-light: #6C5CE7;
    --primary-bg: #2D2B55;
    --border: #2D2D44;
    --nav-bg: #1A1A2E;
    --shadow: 0 2px 12px rgba(0,0,0,0.3);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    padding-bottom: 80px;
    -webkit-tap-highlight-color: transparent;
}

#app {
    max-width: 480px;
    margin: 0 auto;
    position: relative;
}

#page-container {
    padding: 16px;
    min-height: calc(100vh - 80px);
}

/* ─── Typography ───────────────────────────────────────────── */
h1 { font-size: 24px; font-weight: 700; margin-bottom: 4px; }
h2 { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.text-sm { font-size: 14px; }
.text-xs { font-size: 12px; }
.text-secondary { color: var(--text-secondary); }

/* ─── Cards ────────────────────────────────────────────────── */
.card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--shadow);
    margin-bottom: 12px;
    transition: transform var(--transition);
}

.card:active {
    transform: scale(0.98);
}

.card-row {
    display: flex;
    gap: 12px;
}

.card-row .card {
    flex: 1;
}

/* ─── Bottom Navigation ────────────────────────────────────── */
#navbar {
    position: fixed;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 480px;
    background: var(--nav-bg);
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-around;
    padding: 8px 0;
    padding-bottom: max(8px, env(safe-area-inset-bottom));
    z-index: 100;
    box-shadow: 0 -2px 12px rgba(0,0,0,0.05);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 6px 16px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color var(--transition);
    border: none;
    background: none;
    font-size: 11px;
    font-family: inherit;
}

.nav-item.active {
    color: var(--primary);
}

.nav-item svg {
    width: 24px;
    height: 24px;
}

/* ─── Home Page ────────────────────────────────────────────── */
.greeting {
    margin-bottom: 20px;
}

.greeting h1 {
    font-size: 26px;
}

.greeting p {
    color: var(--text-secondary);
    font-size: 15px;
}

.section-title {
    font-size: 18px;
    font-weight: 700;
    margin: 20px 0 12px;
}

/* Practice Cards */
.practice-cards {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
}

.practice-cards::-webkit-scrollbar { display: none; }

.practice-card {
    min-width: 140px;
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: transform var(--transition);
    text-align: center;
}

.practice-card:active { transform: scale(0.96); }

.practice-card .icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 10px;
    font-size: 24px;
}

.practice-card .icon.purple { background: var(--primary-bg); }
.practice-card .icon.green { background: #D5F5E3; }
.practice-card .icon.orange { background: #FEF3C7; }

.dark .practice-card .icon.green { background: #1A3D2E; color: #00B894; }
.dark .practice-card .icon.orange { background: #3D351A; color: #FDCB6E; }
.dark .practice-card .icon.purple { background: var(--primary-bg); }

.practice-card h3 {
    font-size: 15px;
    margin-bottom: 4px;
}

.practice-card .text-xs {
    color: var(--text-secondary);
}

/* Feature Grid */
.feature-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.feature-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: transform var(--transition);
}

.feature-card:active { transform: scale(0.96); }

.feature-card .icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
    font-size: 20px;
}

.feature-card h3 { font-size: 14px; margin-bottom: 2px; }
.feature-card p { font-size: 12px; color: var(--text-secondary); }

/* ─── Progress Page ────────────────────────────────────────── */
.week-calendar {
    display: flex;
    justify-content: space-between;
    gap: 4px;
    margin-bottom: 16px;
}

.day-item {
    flex: 1;
    text-align: center;
    padding: 8px 4px;
    border-radius: 12px;
    background: var(--bg-card);
    box-shadow: var(--shadow);
}

.day-item.today {
    border: 2px solid var(--primary);
}

.day-item.active {
    background: var(--primary);
    color: white;
}

.day-item .day-name {
    font-size: 11px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.day-item.active .day-name { color: rgba(255,255,255,0.8); }

.day-item .day-num {
    font-size: 16px;
    font-weight: 600;
}

.streak-card {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 16px;
    text-align: center;
}

.streak-number {
    font-size: 48px;
    font-weight: 800;
    line-height: 1;
    margin: 8px 0;
}

.chart-container {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--shadow);
    margin-bottom: 16px;
}

.chart-container canvas {
    width: 100%;
    height: 200px;
}

.stats-row {
    display: flex;
    gap: 10px;
    margin-bottom: 12px;
}

.stat-card {
    flex: 1;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    padding: 14px;
    text-align: center;
    box-shadow: var(--shadow);
}

.stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* ─── Profile Page ─────────────────────────────────────────── */
.profile-header {
    text-align: center;
    padding: 20px 0;
}

.avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--primary-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    font-size: 32px;
    color: var(--primary);
    overflow: hidden;
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-header h2 {
    margin-bottom: 2px;
}

.support-banner {
    background: linear-gradient(135deg, #FDCB6E, #E17055);
    border-radius: var(--radius);
    padding: 16px;
    color: white;
    margin-bottom: 16px;
    cursor: pointer;
}

.support-banner h3 { color: white; font-size: 16px; }
.support-banner p { font-size: 13px; opacity: 0.9; margin-top: 4px; }

.settings-list {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.settings-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
}

.settings-item:last-child { border-bottom: none; }

.settings-item .left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.settings-item .icon-circle {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.settings-item .label { font-size: 15px; }

/* Toggle Switch */
.toggle {
    position: relative;
    width: 48px;
    height: 28px;
    background: var(--border);
    border-radius: 14px;
    cursor: pointer;
    transition: background var(--transition);
}

.toggle.active { background: var(--primary); }

.toggle::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 24px;
    height: 24px;
    background: white;
    border-radius: 50%;
    transition: transform var(--transition);
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.toggle.active::after { transform: translateX(20px); }

/* ─── Practice Page ────────────────────────────────────────── */
.practice-header {
    text-align: center;
    padding: 20px 0 12px;
}

.question-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    margin-bottom: 16px;
    text-align: center;
}

.question-card .part-badge {
    display: inline-block;
    background: var(--primary-bg);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 12px;
}

.question-card .question-text {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.4;
}

.recorder-area {
    text-align: center;
    padding: 20px 0;
}

.record-btn {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--accent-red);
    border: none;
    color: white;
    font-size: 32px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    box-shadow: 0 4px 20px rgba(225, 112, 85, 0.4);
    transition: all var(--transition);
}

.record-btn.recording {
    background: var(--accent-red);
    animation: pulse 1.5s infinite;
}

.record-btn.disabled {
    background: var(--border);
    box-shadow: none;
    cursor: not-allowed;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(225, 112, 85, 0.4); }
    70% { box-shadow: 0 0 0 20px rgba(225, 112, 85, 0); }
    100% { box-shadow: 0 0 0 0 rgba(225, 112, 85, 0); }
}

.timer {
    font-size: 24px;
    font-weight: 700;
    color: var(--text);
    font-variant-numeric: tabular-nums;
}

.transcription-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--shadow);
    margin-bottom: 12px;
}

.transcription-card h3 { margin-bottom: 8px; }

.transcription-card .text {
    font-size: 15px;
    line-height: 1.5;
    color: var(--text-secondary);
}

/* Results */
.results-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    margin-bottom: 12px;
}

.score-main {
    text-align: center;
    margin-bottom: 16px;
}

.score-main .score {
    font-size: 56px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.score-main .label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.score-breakdown {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.score-item {
    background: var(--bg);
    border-radius: var(--radius-sm);
    padding: 12px;
    text-align: center;
}

.score-item .value {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
}

.score-item .name {
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.feedback-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--shadow);
    margin-bottom: 12px;
}

.feedback-card h3 { margin-bottom: 8px; }

.feedback-card .text {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-secondary);
}

/* ─── Buttons ──────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 24px;
    border-radius: var(--radius-sm);
    font-size: 16px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    font-family: inherit;
    width: 100%;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
    background: var(--primary);
    color: white;
}

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

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

/* ─── Tips Page ────────────────────────────────────────────── */
.tip-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--shadow);
    margin-bottom: 10px;
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.tip-card .tip-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: var(--primary-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.tip-card h3 { font-size: 15px; margin-bottom: 4px; }
.tip-card p { font-size: 13px; color: var(--text-secondary); line-height: 1.5; }

/* ─── Scoring Guide ────────────────────────────────────────── */
.band-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.band-table th,
.band-table td {
    padding: 10px 12px;
    text-align: left;
    font-size: 13px;
    border-bottom: 1px solid var(--border);
}

.band-table th {
    background: var(--primary-bg);
    color: var(--primary);
    font-weight: 600;
}

/* ─── Loading ──────────────────────────────────────────────── */
.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 12px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ─── Back Button ──────────────────────────────────────────── */
.page-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.back-btn {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--bg-card);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow);
    color: var(--text);
}

/* ─── Utility ──────────────────────────────────────────────── */
.mt-8 { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.mt-20 { margin-top: 20px; }
.mb-8 { margin-bottom: 8px; }
.mb-12 { margin-bottom: 12px; }
.mb-16 { margin-bottom: 16px; }
.text-center { text-align: center; }
.hidden { display: none !important; }

/* ─── Setting Row (toggle inline) ─────────────────────────── */
.setting-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.setting-row h3 { margin-bottom: 2px; }

/* ─── Voice Selection ─────────────────────────────────────── */
.voice-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.voice-card {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    border-radius: var(--radius-sm);
    background: var(--bg);
    cursor: pointer;
    transition: all var(--transition);
    border: 2px solid transparent;
}

.voice-card.selected {
    border-color: var(--primary);
    background: var(--primary-bg);
}

.voice-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    flex-shrink: 0;
}

.voice-icon.female {
    background: #FDEDF4;
    color: #E84393;
}

.voice-icon.male {
    background: #DBEAFE;
    color: #2B77E7;
}

.dark .voice-icon.female {
    background: #3D1A2E;
    color: #E84393;
}

.dark .voice-icon.male {
    background: #1A2E3D;
    color: #74B9FF;
}

.voice-info {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.voice-name {
    font-size: 14px;
    font-weight: 600;
}

.voice-desc {
    font-size: 11px;
    color: var(--text-secondary);
}

.voice-radio {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid var(--border);
    margin-left: auto;
    flex-shrink: 0;
    transition: all var(--transition);
}

.voice-card.selected .voice-radio {
    border-color: var(--primary);
    background: var(--primary);
    box-shadow: inset 0 0 0 3px var(--bg-card);
}

/* ─── Finish Test Button ──────────────────────────────────── */
.finish-test-btn {
    margin-left: auto;
    padding: 6px 14px;
    border-radius: 8px;
    background: var(--accent-red);
    color: white;
    border: none;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
}

/* ─── Dark Mode Feature Card Icons ────────────────────────── */
.dark .feature-card .icon {
    background: var(--primary-bg) !important;
}