/* Reset y configuracion base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Variables CSS - Tema La Salle */
:root {
    --primary-color: #1e3a8a;
    --secondary-color: #f59e0b;
    --background-color: #f8fafc;
    --surface-color: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --accent-color: #8b5cf6;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    /* Espaciado */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Bordes redondeados */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

/* Configuracion del body */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Contenedor principal */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e40af 100%);
    color: white;
    padding: var(--spacing-lg) var(--spacing-md);
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
}

.logo-container {
    display: flex;
    align-items: center;
}

.logo {
    height: 50px;
    width: auto;
    margin-right: var(--spacing-md);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
}

.header-title {
    text-align: right;
}

.header-title h1 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.header-title p {
    font-size: 0.875rem;
    opacity: 0.9;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: var(--spacing-lg) var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

/* Cards */
.card {
    background: var(--surface-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    padding: var(--spacing-lg);
}

/* Search Card */
.search-card {
    position: sticky;
    top: 100px;
    z-index: 50;
}

/* Filter Toggle Section */
.filter-toggle-section {
    margin-bottom: var(--spacing-md);
}

.filter-toggle-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    background: var(--background-color);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.filter-toggle-btn:hover {
    border-color: var(--primary-color);
    background: var(--surface-color);
}

.filter-toggle-btn:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.filter-toggle-btn .filter-icon {
    margin-right: var(--spacing-sm);
    color: var(--primary-color);
}

.filter-toggle-btn .chevron-icon {
    transition: transform 0.2s ease;
    color: var(--text-secondary);
}

.filter-toggle-btn.active .chevron-icon {
    transform: rotate(180deg);
}

.filter-toggle-btn.active {
    border-color: var(--primary-color);
    background: var(--surface-color);
}

/* Filter Section */
.filter-section {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    border-top: none;
    border-top-left-radius: 0;
    border-top-right-radius: 0;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
        max-height: 0;
    }
    to {
        opacity: 1;
        transform: translateY(0);
        max-height: 200px;
    }
}

.filter-section.hiding {
    animation: slideUp 0.3s ease forwards;
}

@keyframes slideUp {
    from {
        opacity: 1;
        transform: translateY(0);
        max-height: 200px;
    }
    to {
        opacity: 0;
        transform: translateY(-10px);
        max-height: 0;
    }
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.radio-item {
    display: flex;
    align-items: center;
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: background-color 0.2s;
}

.radio-item:hover {
    background-color: var(--background-color);
}

.radio-item input[type="radio"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.radio-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    margin-right: var(--spacing-sm);
    position: relative;
    transition: all 0.2s;
}

.radio-item input[type="radio"]:checked + .radio-custom {
    border-color: var(--primary-color);
    background-color: var(--primary-color);
}

.radio-item input[type="radio"]:checked + .radio-custom::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 8px;
    height: 8px;
    background: white;
    border-radius: 50%;
    transform: translate(-50%, -50%);
}

/* Search Section */
.search-section {
    margin-bottom: var(--spacing-lg);
}

.search-label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.search-input-container {
    position: relative;
}

.search-input {
    width: 100%;
    padding: var(--spacing-md);
    padding-right: 50px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    background: var(--surface-color);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.clear-button {
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: color 0.2s, background-color 0.2s;
}

.clear-button:hover {
    color: var(--text-primary);
    background-color: var(--background-color);
}

.search-status {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-sm);
    font-style: italic;
}

/* Estados del search status */
.search-status.searching {
    color: var(--warning-color);
}

.search-status.success {
    color: var(--success-color);
}

.search-status.error {
    color: var(--error-color);
}

.search-status.empty {
    color: var(--text-secondary);
}

/* Results */
.results-count {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    gap: var(--spacing-md);
    color: var(--text-secondary);
}

.loading-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--secondary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Table */
.results-container {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.table-header {
    display: flex;
    background: var(--primary-color);
    color: white;
    font-weight: 600;
}

.table-col-alumno,
.table-col-curso {
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    transition: background-color 0.2s;
}

.table-col-alumno:hover,
.table-col-curso:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.table-col-alumno {
    flex: 1.2;
    border-right: 1px solid rgba(255, 255, 255, 0.2);
}

.table-col-curso {
    flex: 1;
}

.sort-icon {
    margin-left: var(--spacing-sm);
    transition: transform 0.2s;
}

.sort-icon.asc {
    transform: rotate(180deg);
}

.table-body {
    background: var(--surface-color);
}

.table-row {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.2s;
}

.table-row:hover {
    background-color: var(--background-color);
}

.table-row:last-child {
    border-bottom: none;
}

.table-row.even {
    background-color: rgba(248, 250, 252, 0.5);
}

.table-cell {
    padding: var(--spacing-md);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.table-cell-alumno {
    flex: 1.2;
    border-right: 1px solid var(--border-color);
    font-weight: 500;
}

.table-cell-curso {
    flex: 1;
    color: var(--text-secondary);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-secondary);
}

.empty-icon {
    margin-bottom: var(--spacing-lg);
    opacity: 0.6;
}

.empty-icon svg {
    width: 64px;
    height: 64px;
}

/* Footer */
.footer {
    background: var(--surface-color);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-lg) var(--spacing-md);
    text-align: center;
    margin-top: auto;
}

.footer p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Responsive Design para móviles */
@media (max-width: 768px) {
    .header {
        padding: var(--spacing-md);
    }
    
    .header-content {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
    
    .header-title {
        text-align: center;
    }
    
    .logo {
        height: 40px;
        margin-right: var(--spacing-sm);
    }
    
    .main-content {
        padding: var(--spacing-md);
    }
    
    .search-card {
        position: static;
    }
    
    .card-header {
        padding: var(--spacing-md);
    }
    
    .card-body {
        padding: var(--spacing-md);
    }
    
    .radio-group {
        flex-direction: column;
    }
    
    .search-input {
        font-size: 16px; /* Evita zoom en iOS */
        padding: var(--spacing-md);
    }
    
    .table-col-alumno,
    .table-col-curso {
        padding: var(--spacing-sm);
        font-size: 0.875rem;
    }
    
    .table-cell {
        padding: var(--spacing-sm);
        font-size: 0.875rem;
    }
    
    .table-cell-alumno {
        font-size: 0.875rem;
    }
    
    .table-cell-curso {
        font-size: 0.8rem;
    }
    
/* Responsive adjustments for filter toggle - Comportamiento unificado */
@media (max-width: 768px) {
    .filter-toggle-btn {
        font-size: 0.9rem;
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .filter-section {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .radio-group {
        gap: var(--spacing-xs);
    }
    
    .radio-item {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.9rem;
    }
}

/* Desktop - Mismo comportamiento que moviles pero con mejor spacing */
@media (min-width: 769px) {
    .filter-toggle-btn {
        font-size: 1rem;
        padding: var(--spacing-md);
        /* Mantener estilo base, no prominence especial */
    }
    
    .filter-section {
        padding: var(--spacing-md);
    }
    
    .radio-group {
        flex-direction: column; /* Vertical como en moviles */
        gap: var(--spacing-sm);
    }
    
    .radio-item {
        padding: var(--spacing-sm);
        font-size: 1rem;
    }
}
}

@media (max-width: 480px) {
    .header {
        padding: var(--spacing-sm);
    }
    
    .header-title h1 {
        font-size: 1.1rem;
    }
    
    .header-title p {
        font-size: 0.8rem;
    }
    
    .card {
        margin-bottom: var(--spacing-md);
        border-radius: var(--radius-lg);
    }
    
    .card-header h2 {
        font-size: 1.1rem;
    }
    
    .search-input {
        font-size: 16px; /* Evita zoom en iOS */
        padding: var(--spacing-md);
    }
    
    .filter-toggle-btn {
        font-size: 0.85rem;
        padding: var(--spacing-sm);
    }
    
    .table-col-alumno,
    .table-col-curso {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.8rem;
    }
    
    .table-cell {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.8rem;
    }
    
    .table-cell-alumno {
        font-size: 0.8rem;
    }
    
    .table-cell-curso {
        font-size: 0.75rem;
    }
    
    .radio-item {
        padding: var(--spacing-xs);
        font-size: 0.85rem;
    }
    
    .search-label {
        font-size: 0.9rem;
    }
}

/* Optimizaciones especificas para dispositivos tactiles */
@media (hover: none) and (pointer: coarse) {
    .table-row:hover {
        background-color: transparent;
    }
    
    .table-col-alumno:hover,
    .table-col-curso:hover {
        background-color: transparent;
    }
    
    .radio-item:hover {
        background-color: transparent;
    }
    
    .clear-button:hover {
        color: var(--text-secondary);
        background-color: transparent;
    }
    
    .filter-toggle-btn:hover {
        border-color: var(--border-color);
        background: var(--background-color);
    }
}

/* Estados activos para touch */
.table-row:active {
    background-color: var(--background-color);
}

.table-col-alumno:active,
.table-col-curso:active {
    background-color: rgba(255, 255, 255, 0.2);
}

.radio-item:active {
    background-color: var(--background-color);
}

.clear-button:active {
    color: var(--text-primary);
    background-color: var(--background-color);
}

.filter-toggle-btn:active {
    background-color: var(--surface-color);
    border-color: var(--primary-color);
}

/* Animaciones suaves */
.card {
    transition: transform 0.2s, box-shadow 0.2s;
}

.table-row {
    transition: background-color 0.15s ease;
}

.search-input {
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

/* Mejoras de accesibilidad */
.search-input:focus-visible,
.radio-item input[type="radio"]:focus-visible + .radio-custom {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.clear-button:focus-visible,
.filter-toggle-btn:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Scroll suave en iOS */
.results-container {
    -webkit-overflow-scrolling: touch;
}

/* Evitar seleccion de texto en elementos interactivos */
.table-col-alumno,
.table-col-curso,
.radio-item,
.clear-button,
.filter-toggle-btn {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}