/**
 * Training - Page-specific Styles
 * Training path viewer with levels, categories, and material cards
 */

/* ============================================
   PATH SELECTOR
   ============================================ */

.path-selector {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-left: auto;
}

.path-selector label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.path-selector select {
    padding: 0.5rem 1rem;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    cursor: pointer;
    transition: border-color 0.2s;
}

.path-selector select:hover,
.path-selector select:focus {
    border-color: var(--accent);
    outline: none;
}

/* ============================================
   STATS BAR
   ============================================ */

.stats-bar {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1rem 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.stat-icon {
    font-size: 1.25rem;
}

.stat-value {
    font-weight: 700;
    color: var(--accent);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ============================================
   LEVEL SECTION
   ============================================ */

.level-section {
    margin-bottom: 2rem;
}

.level-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    cursor: pointer;
    transition: background 0.2s;
}

.level-header:hover {
    background: #263548;
}

.level-header.collapsed {
    border-radius: var(--border-radius);
}

.level-icon {
    font-size: 1.5rem;
}

.level-label {
    font-size: 1.1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.level-toggle {
    margin-left: auto;
    color: var(--text-muted);
    transition: transform 0.2s;
}

.level-header.collapsed .level-toggle {
    transform: rotate(-90deg);
}

/* Level colors */
.level-section[data-level="1"] .level-header { border-left: 4px solid var(--color-info); }
.level-section[data-level="1"] .level-label { color: var(--color-info); }
.level-section[data-level="2"] .level-header { border-left: 4px solid var(--color-warning); }
.level-section[data-level="2"] .level-label { color: var(--color-warning); }
.level-section[data-level="3"] .level-header { border-left: 4px solid #8b5cf6; }
.level-section[data-level="3"] .level-label { color: #8b5cf6; }

.level-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.level-content.hidden {
    display: none;
}

/* ============================================
   CATEGORY
   ============================================ */

.category-section {
    background: var(--bg-primary);
    border-radius: var(--border-radius-sm);
    padding: 1rem;
}

.category-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.category-icon {
    font-size: 1rem;
}

.category-label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-label);
}

/* ============================================
   MATERIALS GRID
   ============================================ */

.materials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 0.75rem;
}

/* ============================================
   MATERIAL CARD
   ============================================ */

.material-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 1rem;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    flex-direction: column;
    position: relative;
}

.material-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.15);
}

.material-card.optional {
    opacity: 0.7;
}

.material-card.optional:hover {
    opacity: 1;
}

.material-type-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    text-align: center;
}

.material-cover {
    width: 100%;
    height: 120px;
    object-fit: contain;
    margin-bottom: 0.5rem;
    border-radius: 4px;
    background: var(--bg-primary);
}

.material-label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.3;
    text-align: center;
}

.material-meta {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: auto;
}

/* ============================================
   MATERIAL BADGES
   ============================================ */

.material-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
}

.badge-must-own {
    background: rgba(251, 191, 36, 0.2);
    color: #fbbf24;
}

.badge-time {
    background: rgba(100, 116, 139, 0.3);
    color: var(--text-secondary);
}

.badge-difficulty-low {
    background: rgba(16, 185, 129, 0.2);
    color: var(--accent);
}

.badge-difficulty-medium {
    background: rgba(251, 191, 36, 0.2);
    color: #fbbf24;
}

.badge-difficulty-hard {
    background: rgba(239, 68, 68, 0.2);
    color: var(--color-error);
}

.badge-optional {
    background: rgba(100, 116, 139, 0.3);
    color: var(--text-muted);
}

/* ============================================
   MATERIAL EXPANDED VIEW
   ============================================ */

.material-expanded {
    display: none;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
}

.material-card.expanded .material-expanded {
    display: block;
}

.material-description {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    line-height: 1.5;
}

.material-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.5rem 1rem;
    background: var(--accent);
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius-xs);
    font-size: 0.8rem;
    font-weight: 600;
    transition: background 0.2s;
}

.material-link:hover {
    background: var(--accent-hover);
}

/* ============================================
   DISCLAIMER OVERRIDE
   ============================================ */

.disclaimer {
    color: var(--text-muted);
}

/* ============================================
   LOADING & ERROR OVERRIDES
   ============================================ */

.loading {
    padding: 3rem;
}

.loading-spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--accent);
    animation: spin 1s linear infinite;
}

.error-message {
    text-align: center;
    padding: 2rem;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--color-error);
    border-radius: var(--border-radius-sm);
    color: var(--color-error);
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
    .path-selector {
        width: 100%;
        margin-left: 0;
    }

    .path-selector select {
        flex: 1;
    }

    .stats-bar {
        justify-content: center;
    }

    .materials-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
}

/* ============================================
   PRINT
   ============================================ */

@media print {
    .path-selector {
        display: none;
    }

    .level-header, .level-content, .category-section, .material-card {
        background: white;
        border-color: #ccc;
    }
}