/* ============================================
   MATERIAS - Diseño Moderno y Atractivo
   ============================================ */

/* Variables del tema */
.mat-container {
    --mat-primary: #d4af37;
    --mat-primary-dark: #b8860b;
    --mat-primary-light: #f5e6c8;
    --mat-accent: #e8d5a3;
    --mat-bg: #fefcf7;
    --mat-text: #5a4a2a;
    --mat-text-light: #8a7a5a;
    --mat-white: #ffffff;
    --mat-success: #28a745;
    --mat-danger: #dc3545;
    --mat-shadow: 0 4px 20px rgba(212, 175, 55, 0.15);
    --mat-shadow-lg: 0 8px 30px rgba(212, 175, 55, 0.25);
    --mat-radius: 12px;
    --mat-radius-sm: 8px;
}

.mat-container {
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--mat-bg) 0%, #f9f4e8 100%);
    min-height: 100vh;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

/* ==================== HEADER ==================== */
.mat-header {
    background: linear-gradient(135deg, var(--mat-primary) 0%, var(--mat-primary-dark) 100%);
    border-radius: var(--mat-radius);
    padding: 1.5rem 2rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--mat-shadow-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.mat-header-content {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--mat-white);
}

.mat-header-icon {
    font-size: 2.5rem;
    opacity: 0.9;
}

.mat-header h1 {
    margin: 0;
    font-size: 1.75rem;
    font-weight: 700;
}

.mat-header p {
    margin: 0.25rem 0 0;
    opacity: 0.9;
    font-size: 0.9rem;
}

.mat-header-stats {
    display: flex;
    gap: 1rem;
}

.mat-header-stats .mat-stat {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.75rem 1.25rem;
    border-radius: var(--mat-radius-sm);
    text-align: center;
    min-width: 90px;
}

.mat-header-stats .mat-stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--mat-white);
}

.mat-header-stats .mat-stat-label {
    font-size: 0.7rem;
    color: rgba(255, 255, 255, 0.85);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ==================== ALERTAS ==================== */
.mat-alert {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    border-radius: var(--mat-radius);
    margin-bottom: 1.5rem;
    animation: mat-slideIn 0.3s ease;
}

@keyframes mat-slideIn {
    from { transform: translateY(-10px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.mat-alert-success {
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    color: #155724;
    border-left: 4px solid var(--mat-success);
}

.mat-alert-error {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    color: #721c24;
    border-left: 4px solid var(--mat-danger);
}

.mat-alert-close {
    margin-left: auto;
    background: transparent;
    border: none;
    font-size: 1.1rem;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity 0.2s;
    padding: 0.25rem;
}

.mat-alert-close:hover {
    opacity: 1;
}

/* ==================== PANEL DE SELECCIÓN ==================== */
.mat-selection-panel {
    background: var(--mat-white);
    border-radius: var(--mat-radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--mat-shadow);
    border: 1px solid var(--mat-primary-light);
}

.mat-panel-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0 0 1.25rem 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--mat-text);
}

.mat-panel-title i {
    color: var(--mat-primary-dark);
}

.mat-selection-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.mat-select-group {
    display: flex;
    flex-direction: column;
}

.mat-select-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--mat-text);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.mat-select-group label i {
    color: var(--mat-primary-dark);
}

.mat-search-wrapper,
.mat-select-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.mat-search-wrapper input,
.mat-select-wrapper select {
    width: 100%;
    padding: 0.85rem 1rem;
    border: 2px solid var(--mat-primary-light);
    border-radius: var(--mat-radius-sm);
    font-size: 0.95rem;
    background: var(--mat-white);
    color: var(--mat-text);
    transition: all 0.2s ease;
}

.mat-select-wrapper select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%23b8860b' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.75rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
    cursor: pointer;
}

.mat-search-wrapper input:focus,
.mat-select-wrapper select:focus {
    outline: none;
    border-color: var(--mat-primary);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.2);
}

.mat-select-wrapper select:disabled {
    background-color: #f5f5f5;
    cursor: not-allowed;
    opacity: 0.7;
}

.mat-search-clear {
    position: absolute;
    right: 0.75rem;
    background: var(--mat-primary-light);
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--mat-text);
    transition: all 0.2s;
}

.mat-search-clear:hover {
    background: var(--mat-primary);
    color: var(--mat-white);
}

.mat-select-loading {
    position: absolute;
    right: 2.5rem;
    top: 50%;
    transform: translateY(-50%);
}

.mat-selection-summary {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: 1.25rem;
    padding: 0.85rem 1rem;
    background: linear-gradient(135deg, var(--mat-primary-light) 0%, var(--mat-accent) 100%);
    border-radius: var(--mat-radius-sm);
    border-left: 4px solid var(--mat-primary);
}

.mat-selection-summary i {
    color: var(--mat-success);
    font-size: 1.25rem;
}

.mat-summary-info {
    flex: 1;
}

.mat-summary-info strong {
    display: block;
    color: var(--mat-text);
    font-size: 1rem;
}

.mat-summary-details {
    display: flex;
    gap: 1rem;
    margin-top: 0.25rem;
    font-size: 0.85rem;
    color: var(--mat-text-light);
}

.mat-summary-details span {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.mat-summary-details i {
    font-size: 0.75rem;
    color: var(--mat-primary-dark);
}

.mat-badge {
    padding: 0.2rem 0.5rem;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
}

.mat-badge-success {
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    color: #155724;
}

.mat-badge-danger {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    color: #721c24;
}

/* ==================== CARD PRINCIPAL ==================== */
.mat-main-card {
    background: var(--mat-white);
    border-radius: var(--mat-radius);
    box-shadow: var(--mat-shadow);
    overflow: hidden;
    border: 1px solid var(--mat-primary-light);
}

/* ==================== TOOLBAR ==================== */
.mat-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    background: linear-gradient(135deg, var(--mat-primary-light) 0%, var(--mat-accent) 100%);
    border-bottom: 2px solid var(--mat-primary);
    flex-wrap: wrap;
}

.mat-toolbar-search {
    display: flex;
    gap: 0.75rem;
    flex: 1;
    flex-wrap: wrap;
}

.mat-search {
    display: flex;
    align-items: center;
    background: var(--mat-white);
    border: 2px solid var(--mat-primary-light);
    border-radius: var(--mat-radius-sm);
    padding: 0 1rem;
    flex: 1;
    min-width: 200px;
    max-width: 280px;
    transition: all 0.2s ease;
}

.mat-search:focus-within {
    border-color: var(--mat-primary);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.2);
}

.mat-search i {
    color: var(--mat-text-light);
}

.mat-search input {
    flex: 1;
    border: none;
    padding: 0.65rem;
    font-size: 0.9rem;
    background: transparent;
    outline: none;
}

.mat-search input:disabled {
    cursor: not-allowed;
}

.mat-toolbar-actions {
    display: flex;
    gap: 0.75rem;
}

/* ==================== BOTONES ==================== */
.mat-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.25rem;
    border: none;
    border-radius: var(--mat-radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.mat-btn-primary {
    background: linear-gradient(135deg, var(--mat-primary) 0%, var(--mat-primary-dark) 100%);
    color: var(--mat-white);
}

.mat-btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(184, 134, 11, 0.4);
}

.mat-btn-secondary {
    background: var(--mat-white);
    color: var(--mat-text);
    border: 2px solid var(--mat-primary-light);
}

.mat-btn-secondary:hover:not(:disabled) {
    background: var(--mat-primary-light);
    border-color: var(--mat-primary);
}

.mat-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.mat-btn-save {
    background: linear-gradient(135deg, var(--mat-success) 0%, #218838 100%);
    color: var(--mat-white);
}

.mat-btn-save:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(40, 167, 69, 0.4);
}

.mat-btn-cancel {
    background: #6c757d;
    color: var(--mat-white);
}

.mat-btn-cancel:hover {
    background: #5a6268;
}

.mat-btn-danger {
    background: linear-gradient(135deg, var(--mat-danger) 0%, #c82333 100%);
    color: var(--mat-white);
}

.mat-btn-danger:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(220, 53, 69, 0.4);
}

/* ==================== CONTENIDO ==================== */
.mat-content {
    min-height: 300px;
}

.mat-loading,
.mat-empty {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--mat-text-light);
}

.mat-loading i,
.mat-empty i {
    font-size: 4rem;
    color: var(--mat-primary-light);
    margin-bottom: 1rem;
    display: block;
}

.mat-empty h4 {
    color: var(--mat-text);
    margin: 0 0 0.5rem 0;
    font-weight: 600;
}

.mat-empty p {
    margin: 0;
    font-size: 0.95rem;
}

.mat-spinner {
    width: 3rem;
    height: 3rem;
    border: 4px solid var(--mat-primary-light);
    border-top-color: var(--mat-primary);
    border-radius: 50%;
    animation: mat-spin 1s linear infinite;
    margin: 0 auto 1rem;
}

.mat-spinner-sm {
    width: 1rem;
    height: 1rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: currentColor;
    border-radius: 50%;
    animation: mat-spin 0.8s linear infinite;
    display: inline-block;
}

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

/* ==================== GRID DE TARJETAS ==================== */
.mat-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
    padding: 1.5rem;
}

.mat-card {
    background: var(--mat-white);
    border-radius: var(--mat-radius);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border: 2px solid var(--mat-primary-light);
    overflow: hidden;
    transition: all 0.3s ease;
}

.mat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--mat-shadow-lg);
    border-color: var(--mat-primary);
}

.mat-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background: linear-gradient(135deg, var(--mat-primary-light) 0%, var(--mat-accent) 100%);
    border-bottom: 2px solid var(--mat-primary);
}

.mat-card-id {
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--mat-primary-dark);
    background: var(--mat-white);
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    border: 1px solid var(--mat-primary);
}

.mat-card-semester {
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--mat-white);
    background: var(--mat-primary-dark);
    padding: 0.25rem 0.6rem;
    border-radius: 12px;
}

.mat-card-body {
    padding: 1rem;
}

.mat-card-title {
    margin: 0 0 0.75rem 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--mat-text);
    line-height: 1.3;
}

.mat-card-info {
    display: flex;
    gap: 1rem;
    margin-bottom: 0.75rem;
    font-size: 0.85rem;
    color: var(--mat-text-light);
}

.mat-card-info span {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.mat-card-info i {
    color: var(--mat-primary-dark);
}

.mat-card-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.mat-tag {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    background: var(--mat-bg);
    border: 1px solid var(--mat-primary-light);
    border-radius: 6px;
    font-size: 0.75rem;
    color: var(--mat-text-light);
}

.mat-tag-serial {
    background: linear-gradient(135deg, #fff3cd 0%, #ffeeba 100%);
    border-color: #ffc107;
    color: #856404;
}

.mat-card-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: var(--mat-bg);
    border-top: 1px solid var(--mat-primary-light);
}

.mat-btn-icon {
    width: 34px;
    height: 34px;
    border: none;
    border-radius: var(--mat-radius-sm);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    font-size: 0.85rem;
}

.mat-btn-edit {
    background: linear-gradient(135deg, var(--mat-accent) 0%, var(--mat-primary-light) 100%);
    color: var(--mat-text);
    border: 1px solid var(--mat-primary);
}

.mat-btn-edit:hover {
    background: var(--mat-primary);
    color: var(--mat-white);
    transform: translateY(-2px);
}

.mat-btn-delete {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    color: #721c24;
    border: 1px solid var(--mat-danger);
}

.mat-btn-delete:hover {
    background: var(--mat-danger);
    color: var(--mat-white);
    transform: translateY(-2px);
}

.mat-table-footer {
    display: flex;
    justify-content: flex-end;
    padding: 1rem 1.25rem;
    background: var(--mat-bg);
    border-top: 1px solid var(--mat-primary-light);
    font-size: 0.9rem;
    color: var(--mat-text-light);
}

.mat-table-footer i {
    margin-right: 0.4rem;
    color: var(--mat-primary-dark);
}

/* ==================== MODAL ==================== */
.mat-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: mat-fadeIn 0.2s ease;
}

@keyframes mat-fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.mat-modal {
    background: var(--mat-white);
    border-radius: var(--mat-radius);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: mat-modalSlide 0.3s ease;
}

.mat-modal-lg {
    max-width: 700px;
}

.mat-modal-sm {
    max-width: 450px;
}

@keyframes mat-modalSlide {
    from { transform: translateY(-30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.mat-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    background: linear-gradient(135deg, var(--mat-primary) 0%, var(--mat-primary-dark) 100%);
    color: var(--mat-white);
}

.mat-modal-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
    font-size: 1.2rem;
    font-weight: 600;
}

.mat-modal-header-danger {
    background: linear-gradient(135deg, var(--mat-danger) 0%, #c82333 100%);
}

.mat-modal-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--mat-white);
    transition: all 0.2s;
}

.mat-modal-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.mat-modal-body {
    padding: 1.5rem;
}

.mat-modal-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1rem;
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    border-radius: var(--mat-radius-sm);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    color: #1565c0;
    border-left: 4px solid #2196f3;
}

.mat-modal-info i {
    font-size: 1.25rem;
}

.mat-form-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.mat-form-group {
    display: flex;
    flex-direction: column;
}

.mat-form-group.mat-form-full {
    grid-column: span 3;
}

.mat-form-group label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-weight: 600;
    color: var(--mat-text);
    margin-bottom: 0.4rem;
    font-size: 0.85rem;
}

.mat-form-group label i {
    color: var(--mat-primary-dark);
}

.mat-form-group input,
.mat-form-group select {
    padding: 0.7rem 1rem;
    border: 2px solid var(--mat-primary-light);
    border-radius: var(--mat-radius-sm);
    font-size: 0.95rem;
    transition: all 0.2s ease;
}

.mat-form-group input:focus,
.mat-form-group select:focus {
    outline: none;
    border-color: var(--mat-primary);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.2);
}

.mat-form-group input:disabled {
    background: #f5f5f5;
    color: #888;
}

.mat-modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    background: var(--mat-bg);
    border-top: 1px solid var(--mat-primary-light);
}

/* Warning de eliminación */
.mat-delete-warning {
    text-align: center;
    padding: 1rem;
}

.mat-delete-warning i {
    font-size: 4rem;
    color: var(--mat-danger);
    margin-bottom: 1rem;
    display: block;
}

.mat-delete-warning p {
    margin: 0 0 0.5rem 0;
    font-size: 1rem;
    color: var(--mat-text);
}

.mat-delete-warning strong {
    display: block;
    font-size: 1.1rem;
    color: var(--mat-text);
    margin-bottom: 0.5rem;
}

.mat-delete-warning small {
    color: var(--mat-text-light);
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 992px) {
    .mat-form-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .mat-form-group.mat-form-full {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .mat-container {
        padding: 1rem;
    }

    .mat-header {
        flex-direction: column;
        text-align: center;
        padding: 1.25rem;
    }

    .mat-header-content {
        flex-direction: column;
    }

    .mat-header h1 {
        font-size: 1.5rem;
    }

    .mat-header-icon {
        font-size: 2rem;
    }

    .mat-header-stats {
        justify-content: center;
    }

    .mat-selection-grid {
        grid-template-columns: 1fr;
    }

    .mat-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .mat-toolbar-search {
        flex-direction: column;
    }

    .mat-search {
        max-width: 100%;
    }

    .mat-toolbar-actions {
        justify-content: center;
    }

    .mat-cards-grid {
        grid-template-columns: 1fr;
    }

    .mat-form-grid {
        grid-template-columns: 1fr;
    }

    .mat-form-group.mat-form-full {
        grid-column: span 1;
    }
}