/* ─── Articles Page ─────────────────────────────────────────── */
.articles-container {
    max-width: 900px;
    margin: 0 auto;
}

.articles-header {
    text-align: center;
    padding: 16px 0;
}

.articles-header h1 {
    font-size: 1.8rem;
    margin-bottom: 4px;
}

.articles-header p {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.95rem;
}

/* ─── Category Tabs ────────────────────────────────────────── */
.category-tabs {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 20px;
}

.cat-tab {
    padding: 6px 16px;
    border: 1px solid var(--border-color);
    border-radius: 999px;
    background: var(--bg-card);
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.82rem;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-secondary);
}

.cat-tab:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

.cat-tab.active {
    background: var(--accent-blue);
    color: white;
    border-color: var(--accent-blue);
}

/* ─── Article Grid ─────────────────────────────────────────── */
.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 14px;
}

.article-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    border: 2px solid transparent;
    position: relative;
}

.article-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-teal);
}

.article-card-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.05rem;
    margin-bottom: 6px;
}

.article-card-meta {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
}

.article-meta-tag {
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: capitalize;
}

.article-meta-tag.category {
    background: #E8F4F0;
    color: #2D8B72;
}

.article-meta-tag.difficulty-easy {
    background: #E8F5E0;
    color: #3A8C28;
}

.article-meta-tag.difficulty-medium {
    background: #FFF3E0;
    color: #C47616;
}

.article-meta-tag.difficulty-hard {
    background: #FEECE8;
    color: #C04630;
}

[data-theme="dark"] .article-meta-tag.category {
    background: #1A3A30;
}
[data-theme="dark"] .article-meta-tag.difficulty-easy {
    background: #1A3A1A;
}
[data-theme="dark"] .article-meta-tag.difficulty-medium {
    background: #3A2A10;
}
[data-theme="dark"] .article-meta-tag.difficulty-hard {
    background: #3A1A18;
}

.article-card-preview {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 10px;
    font-size: 0.72rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.article-completed-mark {
    color: var(--accent-green);
    font-weight: 700;
}

/* ─── Typing View ──────────────────────────────────────────── */
.typing-header {
    margin-bottom: 12px;
}

.typing-header h2 {
    font-size: 1.5rem;
    margin-bottom: 6px;
}

.typing-meta {
    display: flex;
    gap: 10px;
}

.typing-meta-item {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--bg-card);
    padding: 3px 10px;
    border-radius: 999px;
}

/* ─── Stats Bar ────────────────────────────────────────────── */
.typing-stats-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 8px 16px;
    margin-bottom: 12px;
    box-shadow: var(--shadow-sm);
    gap: 12px;
}

.ts-stat-group {
    display: flex;
    gap: 16px;
    align-items: baseline;
}

.ts-stat {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
    white-space: nowrap;
}

.ts-value {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--accent-blue);
}

.ts-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
}

.ts-sparkline-wrap {
    flex-shrink: 0;
}

.ts-sparkline-wrap svg {
    display: block;
}

.ts-sound-toggle {
    flex-shrink: 0;
}

.ts-sound-btn {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 28px;
    height: 28px;
    font-size: 0.75rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.ts-sound-btn:hover {
    background: var(--bg-primary);
    border-color: var(--accent-blue);
}

/* ─── Article Text Display ─────────────────────────────────── */
.article-text-display {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 28px 32px;
    box-shadow: var(--shadow-sm);
    font-family: 'Nunito', Georgia, serif;
    font-size: 19px;
    line-height: 2;
    margin-bottom: 12px;
    min-height: 200px;
    max-height: 420px;
    overflow-y: auto;
    scroll-behavior: smooth;
    outline: none;
    cursor: text;
    position: relative;
    border: 2px solid transparent;
    transition: border-color 0.2s ease;
}

.article-text-display:focus {
    border-color: var(--accent-blue);
}

/* Character states */
.char-upcoming {
    color: #B0B8C4;
}

[data-theme="dark"] .char-upcoming {
    color: #5A6578;
}

.char-current {
    color: var(--accent-blue);
    position: relative;
}

.char-current::before {
    content: '';
    position: absolute;
    left: -1px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--accent-blue);
    animation: cursorBlink 0.8s ease-in-out infinite;
    border-radius: 1px;
}

@keyframes cursorBlink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.2; }
}

.char-correct {
    color: #2D3748;
    font-weight: 700;
}

[data-theme="dark"] .char-correct {
    color: #E2E8F0;
    font-weight: 700;
}

.char-error {
    color: #E53E3E;
    text-decoration: underline;
    text-decoration-color: #E53E3E;
    text-underline-offset: 3px;
    position: relative;
}

.char-error .error-char {
    font-size: 0.6em;
    color: #E53E3E;
    position: absolute;
    top: -6px;
    right: -4px;
    font-weight: 700;
    line-height: 1;
}

/* ─── Typing Result ────────────────────────────────────────── */
.typing-result {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-sm);
    text-align: center;
    margin-top: 12px;
}

.typing-result.hidden {
    display: none;
}

.result-header {
    margin-bottom: 16px;
}

.result-header h3 {
    font-size: 1.4rem;
    margin-bottom: 4px;
}

.result-pb-badge {
    display: inline-block;
    background: linear-gradient(135deg, #FEFCE8, #FEF3C7);
    color: #B45309;
    padding: 4px 14px;
    border-radius: 999px;
    font-weight: 700;
    font-size: 0.82rem;
    margin-top: 4px;
}

.result-pb-badge.hidden {
    display: none;
}

[data-theme="dark"] .result-pb-badge {
    background: linear-gradient(135deg, #422006, #451a03);
    color: #FCD34D;
}

.result-stats {
    display: flex;
    justify-content: center;
    gap: 28px;
    margin-bottom: 20px;
}

.result-stat {
    text-align: center;
}

.result-stat-value {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--accent-blue);
}

.result-stat-label {
    font-size: 0.72rem;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--text-secondary);
}

.result-stat-prev {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-top: 2px;
}

.result-stat-prev.improved {
    color: var(--accent-green);
}

.result-stat-prev.declined {
    color: var(--accent-red);
}

.result-actions {
    display: flex;
    gap: 8px;
    justify-content: center;
}

/* ─── Responsive ───────────────────────────────────────────── */
@media (max-width: 600px) {
    .article-grid {
        grid-template-columns: 1fr;
    }

    .article-text-display {
        font-size: 16px;
        padding: 18px;
        line-height: 1.9;
    }

    .typing-stats-bar {
        flex-wrap: wrap;
        gap: 6px;
    }

    .ts-sparkline-wrap {
        order: 3;
        width: 100%;
    }
}