/* ===========================
   VARIABLES CSS - COLORES CORPORATIVOS JC OPOSICIONES FERROVIARIAS
   =========================== */
:root {
    /* Colores corporativos */
    --color-primary: #FFC107;        /* Amarillo ferroviario */
    --color-primary-dark: #FFA000;
    --color-secondary: #2F5496;      /* Azul marino */
    --color-dark: #212529;           /* Negro/Gris oscuro */
    --color-dark-light: #343a40;
    --color-light: #FFFFFF;
    --color-success: #28A745;        /* Verde */
    --color-warning: #FFC107;        /* Amarillo */
    --color-danger: #DC3545;         /* Rojo */
    
    /* Colores de zonas */
    --color-zone-green: #C6EFCE;
    --color-zone-green-border: #28A745;
    --color-zone-yellow: #FFEB9C;
    --color-zone-yellow-border: #FFC107;
    --color-zone-orange: #FFC7CE;
    --color-zone-orange-border: #FF6B6B;
    
    /* Tipografía */
    --font-family: 'Roboto', 'Arial', sans-serif;
    
    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Sombras */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.2);
    
    /* Bordes */
    --border-radius: 8px;
    --border-radius-sm: 4px;
    --border-radius-lg: 12px;
}

/* ===========================
   RESET Y ESTILOS GLOBALES
   =========================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-dark);
    background-color: #f5f5f5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    width: 100%;
}

/* ===========================
   HEADER CORPORATIVO
   =========================== */
.header {
    background: linear-gradient(135deg, var(--color-primary) 0%, #FFD54F 100%);
    color: var(--color-dark);
    padding: var(--spacing-md) 0;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
}

.logo-section {
    flex: 1;
}

.logo-text h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-dark);
    margin: 0;
    text-shadow: 1px 1px 2px rgba(255, 255, 255, 0.5);
}

.tagline {
    font-size: 0.9rem;
    color: var(--color-dark);
    margin-top: 0.25rem;
    font-weight: 400;
    opacity: 0.9;
}

.page-title {
    text-align: center;
    padding-top: var(--spacing-sm);
    border-top: 2px solid rgba(0, 0, 0, 0.1);
}

.page-title h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 0.25rem;
}

.page-title h2 i {
    margin-right: 0.5rem;
    color: var(--color-secondary);
}

.page-title p {
    font-size: 0.9rem;
    color: var(--color-dark);
    opacity: 0.8;
}

/* ===========================
   CONTENIDO PRINCIPAL
   =========================== */
.main-content {
    flex: 1;
    padding: var(--spacing-lg) 0;
}

section {
    background: var(--color-light);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-md);
}

section h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
    border-bottom: 3px solid var(--color-primary);
    padding-bottom: var(--spacing-sm);
}

section h3 i {
    margin-right: 0.5rem;
    color: var(--color-primary);
}

/* ===========================
   LEYENDA DE COLORES
   =========================== */
.legend-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.legend-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.legend-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 2px solid;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.legend-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.legend-green {
    background-color: var(--color-zone-green);
    border-color: var(--color-zone-green-border);
}

.legend-yellow {
    background-color: var(--color-zone-yellow);
    border-color: var(--color-zone-yellow-border);
}

.legend-orange {
    background-color: var(--color-zone-orange);
    border-color: var(--color-zone-orange-border);
}

.legend-item .icon {
    font-size: 2rem;
    margin-right: var(--spacing-sm);
}

.legend-text strong {
    display: block;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.legend-text span {
    font-size: 0.9rem;
    color: #555;
}

/* ===========================
   PANEL DE ESTADÍSTICAS
   =========================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.stat-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border: 1px solid #dee2e6;
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--color-dark);
    flex-shrink: 0;
}

.stat-content h4 {
    font-size: 0.9rem;
    font-weight: 500;
    color: #666;
    margin-bottom: 0.25rem;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-dark);
    line-height: 1;
}

.zone-distribution {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.zone-badge {
    padding: 0.25rem 0.75rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    border: 2px solid;
}

.zone-badge.zone-green {
    background-color: var(--color-zone-green);
    border-color: var(--color-zone-green-border);
    color: var(--color-zone-green-border);
}

.zone-badge.zone-yellow {
    background-color: var(--color-zone-yellow);
    border-color: var(--color-zone-yellow-border);
    color: #856404;
}

.zone-badge.zone-orange {
    background-color: var(--color-zone-orange);
    border-color: var(--color-zone-orange-border);
    color: var(--color-zone-orange-border);
}

/* ===========================
   FORMULARIO DE INSCRIPCIÓN
   =========================== */
.registration-form {
    margin-top: var(--spacing-md);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

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

.form-group label {
    font-weight: 500;
    color: var(--color-dark);
    margin-bottom: var(--spacing-xs);
    font-size: 0.95rem;
}

.form-group label i {
    margin-right: 0.5rem;
    color: var(--color-primary);
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group select {
    padding: 0.75rem;
    border: 2px solid #dee2e6;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-family: var(--font-family);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(255, 193, 7, 0.15);
}

.form-group small {
    margin-top: 0.25rem;
    font-size: 0.8rem;
    color: #6c757d;
}

/* Checkbox personalizado */
.checkbox-group {
    justify-content: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    position: relative;
    padding-left: 35px;
    margin-bottom: 0;
}

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

.checkmark {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    height: 24px;
    width: 24px;
    background-color: #fff;
    border: 2px solid #dee2e6;
    border-radius: var(--border-radius-sm);
    transition: all 0.3s ease;
}

.checkbox-label:hover .checkmark {
    border-color: var(--color-primary);
}

.checkbox-label input[type="checkbox"]:checked ~ .checkmark {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
    left: 8px;
    top: 4px;
    width: 6px;
    height: 10px;
    border: solid var(--color-dark);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.checkbox-label input[type="checkbox"]:checked ~ .checkmark:after {
    display: block;
}

.checkbox-text {
    font-weight: 500;
    font-size: 0.95rem;
}

.checkbox-text i {
    margin-right: 0.5rem;
    color: var(--color-primary);
}

/* Botones */
.form-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    font-family: var(--font-family);
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-dark);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
}

.btn-secondary {
    background: #6c757d;
    color: var(--color-light);
}

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

.btn-icon {
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
    background: var(--color-light);
    color: var(--color-dark);
    border: 1px solid #dee2e6;
}

.btn-icon:hover {
    background: #f8f9fa;
    border-color: var(--color-primary);
}

.btn-danger {
    background: var(--color-danger);
    color: var(--color-light);
    border-color: var(--color-danger);
}

.btn-danger:hover {
    background: #c82333;
}

/* Mensajes del formulario */
.form-message {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    font-weight: 500;
    display: none;
}

.form-message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    display: block;
}

.form-message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    display: block;
}

/* ===========================
   TABLA DE RANKING
   =========================== */
.ranking-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.ranking-header h3 {
    margin-bottom: 0;
    border-bottom: none;
    padding-bottom: 0;
}

.ranking-actions {
    display: flex;
    gap: var(--spacing-xs);
}

/* Búsqueda */
.search-box {
    position: relative;
    margin-bottom: var(--spacing-md);
}

.search-box i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #6c757d;
}

.search-box input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border: 2px solid #dee2e6;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-family: var(--font-family);
    transition: border-color 0.3s ease;
}

.search-box input:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* Tabla responsive */
.table-container {
    overflow-x: auto;
    border-radius: var(--border-radius);
    border: 1px solid #dee2e6;
}

.ranking-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-light);
}

.ranking-table thead {
    background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-light) 100%);
    color: var(--color-light);
}

.ranking-table th {
    padding: 1rem;
    font-weight: 600;
    text-align: left;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ranking-table td {
    padding: 1rem;
    border-bottom: 1px solid #dee2e6;
}

.ranking-table tbody tr {
    transition: background-color 0.3s ease;
}

.ranking-table tbody tr:hover {
    background-color: #f8f9fa;
}

.text-center {
    text-align: center !important;
}

/* Colores de fila según zona */
.ranking-table tbody tr.row-green {
    background-color: var(--color-zone-green) !important;
}

.ranking-table tbody tr.row-yellow {
    background-color: var(--color-zone-yellow) !important;
}

.ranking-table tbody tr.row-orange {
    background-color: var(--color-zone-orange) !important;
}

/* Estado vacío */
.empty-state td {
    padding: var(--spacing-xl) !important;
    text-align: center;
    color: #6c757d;
}

.empty-state i {
    font-size: 3rem;
    display: block;
    margin-bottom: var(--spacing-sm);
    color: #adb5bd;
}

.empty-state p {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.empty-state small {
    font-size: 0.9rem;
    color: #6c757d;
}

/* Badge de posición */
.position-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    font-weight: 700;
    font-size: 0.9rem;
}

.position-badge.top-1 {
    background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
    color: var(--color-dark);
}

.position-badge.top-2 {
    background: linear-gradient(135deg, #C0C0C0 0%, #A8A8A8 100%);
    color: var(--color-dark);
}

.position-badge.top-3 {
    background: linear-gradient(135deg, #CD7F32 0%, #B8860B 100%);
    color: var(--color-light);
}

.position-badge.other {
    background: #e9ecef;
    color: var(--color-dark);
}

/* Badge de estado */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.status-badge i {
    font-size: 1rem;
}

.status-green {
    background-color: var(--color-zone-green);
    color: var(--color-zone-green-border);
    border: 2px solid var(--color-zone-green-border);
}

.status-yellow {
    background-color: var(--color-zone-yellow);
    color: #856404;
    border: 2px solid var(--color-zone-yellow-border);
}

.status-orange {
    background-color: var(--color-zone-orange);
    color: var(--color-zone-orange-border);
    border: 2px solid var(--color-zone-orange-border);
}

/* ===========================
   FOOTER CORPORATIVO
   =========================== */
.footer {
    background: linear-gradient(135deg, var(--color-dark) 0%, #000000 100%);
    color: var(--color-light);
    padding: var(--spacing-lg) 0 var(--spacing-md);
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-column h4 {
    color: var(--color-primary);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-column p {
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
    color: #adb5bd;
}

.footer-column p.highlight {
    color: var(--color-primary);
    font-weight: 500;
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-column ul li a {
    color: #adb5bd;
    text-decoration: none;
    transition: color 0.3s ease, transform 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.footer-column ul li a:hover {
    color: var(--color-primary);
    transform: translateX(5px);
}

.footer-column ul li a i {
    width: 20px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.9rem;
    color: #adb5bd;
    margin-bottom: 0.5rem;
}

.footer-tech {
    font-size: 0.8rem !important;
    color: #6c757d !important;
}

/* ===========================
   AVISOS Y NOTIFICACIONES
   =========================== */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
    border-left: 4px solid;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.alert i {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.alert-warning {
    background-color: #fff3cd;
    border-color: var(--color-warning);
    color: #856404;
}

.alert-info {
    background-color: #d1ecf1;
    border-color: #17a2b8;
    color: #0c5460;
}

.alert-success {
    background-color: #d4edda;
    border-color: var(--color-success);
    color: #155724;
}

/* ===========================
   SECCIÓN DE MÉRITOS
   =========================== */
.merits-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-top: var(--spacing-md);
}

.merits-section h4 {
    font-size: 1.1rem;
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.merits-section h4 i {
    color: var(--color-primary);
}

.merits-list {
    list-style: none;
    padding: 0;
}

.merits-list li {
    padding: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
    background: var(--color-light);
    border-radius: var(--border-radius-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.merit-name {
    font-size: 0.9rem;
    color: var(--color-dark);
}

.merit-points {
    font-weight: 600;
    color: var(--color-primary);
    font-size: 0.9rem;
}

/* ===========================
   ANIMACIONES
   =========================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        transform: translateX(-100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.fade-in {
    animation: fadeIn 0.5s ease forwards;
}

.slide-in {
    animation: slideIn 0.5s ease forwards;
}

/* ===========================
   RESPONSIVE
   =========================== */
@media (max-width: 768px) {
    .logo-text h1 {
        font-size: 1.3rem;
    }
    
    .page-title h2 {
        font-size: 1.2rem;
    }
    
    .tagline, .page-title p {
        font-size: 0.8rem;
    }
    
    section {
        padding: var(--spacing-md);
    }
    
    section h3 {
        font-size: 1.2rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .ranking-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .ranking-actions {
        width: 100%;
        justify-content: space-between;
    }
    
    .ranking-table th,
    .ranking-table td {
        padding: 0.5rem;
        font-size: 0.85rem;
    }
    
    .stat-card {
        flex-direction: column;
        text-align: center;
    }
    
    .stat-icon {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .header {
        padding: var(--spacing-sm) 0;
    }
    
    .main-content {
        padding: var(--spacing-md) 0;
    }
    
    .legend-items {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
}

/* ===========================
   UTILIDADES
   =========================== */
.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

.loading {
    opacity: 0.6;
    pointer-events: none;
}

.spinner {
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--color-primary);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    display: inline-block;
    margin: 0 auto;
}

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

/* ===========================
   ACCESIBILIDAD
   =========================== */
:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Scroll suave */
html {
    scroll-behavior: smooth;
}