/* ═══════════════════════════════════════════════════════
   Training Page — Redesigned UI
   ═══════════════════════════════════════════════════════ */

.tr-page {
    width: 100%;
    max-width: 100%;
    overflow: hidden;
}

/* ─── Hero ─── */
.tr-hero {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--color-border);
}
.tr-hero__title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text);
    margin: 0;
}
.tr-hero__desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin: 6px 0 0;
    line-height: 1.5;
    max-width: 480px;
}

/* ─── Stats ─── */
.tr-stats {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

/* ─── Toolbar ─── */
.tr-toolbar {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

/* ─── Card List ─── */
.tr-card-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.tr-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: box-shadow var(--transition-fast);
}
.tr-card:hover {
    box-shadow: var(--shadow-md);
}

.tr-card__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    background: #f9fafb;
    border-bottom: 1px solid #f3f4f6;
}
.tr-card__category {
    display: inline-block;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    background: color-mix(in srgb, var(--cat-color) 12%, transparent);
    color: var(--cat-color);
    border: 1px solid color-mix(in srgb, var(--cat-color) 25%, transparent);
}
.tr-card__meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}
.tr-card__date,
.tr-card__admin {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.tr-card__body {
    padding: 16px 20px;
}
.tr-card__question,
.tr-card__answer {
    display: flex;
    gap: 10px;
    align-items: flex-start;
}
.tr-card__label-icon {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: #eff6ff;
    color: var(--color-primary);
    margin-top: 2px;
}
.tr-card__label-icon--success {
    background: #ecfdf5;
    color: var(--color-success);
}
.tr-card__field-label {
    display: block;
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-text-secondary);
    margin-bottom: 3px;
}
.tr-card__text {
    font-size: var(--font-size-sm);
    line-height: 1.6;
    color: var(--color-text);
    white-space: pre-wrap;
    word-break: break-word;
    margin: 0;
}
.tr-card__divider {
    display: flex;
    justify-content: center;
    padding: 6px 0;
    color: var(--color-text-muted);
}

.tr-card__footer {
    display: flex;
    gap: 8px;
    padding: 10px 20px;
    border-top: 1px solid #f3f4f6;
    background: #fafbfc;
}

/* ─── Modal ─── */
.tr-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
}
.tr-modal {
    background: var(--color-surface);
    border-radius: 16px;
    width: 90%;
    max-width: 680px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    animation: kbModalIn 0.2s ease-out;
}
.tr-modal__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 20px 24px 16px;
    border-bottom: 1px solid var(--color-border);
}
.tr-modal__header h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin: 0;
    color: var(--color-text);
}
.tr-modal__subtitle {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    margin: 4px 0 0;
}
.tr-modal__body {
    padding: 20px 24px;
}
.tr-modal__footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 16px 24px;
    border-top: 1px solid var(--color-border);
}

/* ─── Category Chips ─── */
.tr-category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 8px;
}
.tr-category-chip {
    display: block;
    padding: 10px 14px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: border-color var(--transition-fast), background var(--transition-fast);
}
.tr-category-chip:hover {
    border-color: var(--chip-color);
    background: color-mix(in srgb, var(--chip-color) 5%, transparent);
}
.tr-category-chip input {
    display: none;
}
.tr-category-chip input:checked ~ .tr-category-chip__label {
    color: var(--chip-color);
}
.tr-category-chip:has(input:checked) {
    border-color: var(--chip-color);
    background: color-mix(in srgb, var(--chip-color) 8%, transparent);
}
.tr-category-chip__label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text);
    transition: color var(--transition-fast);
}
.tr-category-chip__desc {
    display: block;
    font-size: 0.6875rem;
    color: var(--color-text-muted);
    margin-top: 2px;
    line-height: 1.3;
}

/* ─── Question/Answer Inputs ─── */
.tr-question-input {
    border-left: 3px solid var(--color-primary);
}
.tr-answer-input {
    border-left: 3px solid var(--color-success);
    background: #f0fdf4;
}
.tr-answer-input:focus {
    background: #fff;
}

/* ─── Arrow Divider ─── */
.tr-arrow-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 4px 0;
}
.tr-arrow-divider__line {
    flex: 1;
    height: 1px;
    background: var(--color-border);
}
.tr-arrow-divider__icon {
    color: var(--color-text-muted);
    display: flex;
}

/* ─── Help Box ─── */
.tr-help-box {
    margin-top: 24px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}
.tr-help-box__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 20px;
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text);
    transition: background var(--transition-fast);
}
.tr-help-box__header:hover {
    background: #f9fafb;
}
.tr-help-box__header span:first-child {
    display: flex;
    align-items: center;
    gap: 8px;
}
.tr-help-box__arrow {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}
.tr-help-box__body {
    padding: 0 20px 20px;
}

.tr-help-step {
    display: flex;
    gap: 14px;
    padding: 14px 0;
    align-items: flex-start;
}
.tr-help-step + .tr-help-step {
    border-top: 1px solid #f3f4f6;
}
.tr-help-step__num {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    font-size: var(--font-size-xs);
    font-weight: 700;
    flex-shrink: 0;
}
.tr-help-step strong {
    display: block;
    font-size: var(--font-size-sm);
    margin-bottom: 2px;
}
.tr-help-step p {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    line-height: 1.5;
    margin: 0;
}

/* ═══════════════════════════════════════════════════════
   Responsive
   ═══════════════════════════════════════════════════════ */

@media (max-width: 768px) {
    .tr-hero {
        flex-direction: column;
    }
    .tr-hero__actions {
        width: 100%;
    }
    .tr-hero__actions .kb-btn {
        width: 100%;
        justify-content: center;
    }
    .tr-toolbar {
        flex-direction: column;
    }
    .tr-stats {
        gap: 8px;
    }
    .tr-stats .kb-stat {
        flex: 1;
        min-width: 80px;
        padding: 10px 14px;
    }
    .tr-modal {
        width: 95%;
        max-height: 95vh;
    }
    .tr-category-grid {
        grid-template-columns: 1fr 1fr;
    }
    .tr-card__header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
}

@media (max-width: 480px) {
    .tr-category-grid {
        grid-template-columns: 1fr;
    }
}