/* assets/css/style.css */
/* Sistema de diseño premium para GIA v2 (Modo Oscuro, Glassmorphism, Outfit Font) */

:root {
    /* Paleta de Colores - MODO CLARO POR DEFECTO */
    --bg-main: #f8fafc;
    --bg-surface: rgba(255, 255, 255, 0.85);
    --bg-surface-hover: rgba(255, 255, 255, 0.95);
    --bg-card: rgba(255, 255, 255, 0.7);
    --bg-modal: #ffffff;
    --bg-nav: rgba(255, 255, 255, 0.8);
    --bg-footer: rgba(241, 245, 249, 0.9);
    --bg-table: rgba(15, 23, 42, 0.015);
    --bg-table-header: rgba(15, 23, 42, 0.04);
    --bg-input: #ffffff;
    --bg-input-focus: #ffffff;
    --bg-stat-box: rgba(15, 23, 42, 0.025);
    --bg-session-item: rgba(15, 23, 42, 0.02);
    --bg-session-item-hover: rgba(15, 23, 42, 0.05);
    --border-glow: rgba(6, 182, 212, 0.15);
    --border-light: #cbd5e1;
    
    /* Colores Temáticos */
    --cyan: #0891b2;
    --cyan-hover: #0e7490;
    --purple: #7c3aed;
    --purple-hover: #6d28d9;
    --emerald: #059669;
    --emerald-hover: #047857;
    --amber: #d97706;
    --rose: #e11d48;
    
    /* Textos */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    /* Sombras y Efectos */
    --shadow-main: 0 10px 30px rgba(15, 23, 42, 0.06);
    --shadow-glow: 0 0 15px rgba(6, 182, 212, 0.08);
    --glass-blur: blur(12px);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html.dark-theme {
    /* Paleta de Colores - MODO OSCURO (OPCIONAL) */
    --bg-main: #0b0f19;
    --bg-surface: rgba(22, 28, 45, 0.65);
    --bg-surface-hover: rgba(22, 28, 45, 0.85);
    --bg-card: rgba(30, 41, 59, 0.45);
    --bg-modal: #141b2d;
    --bg-nav: rgba(11, 15, 25, 0.8);
    --bg-footer: rgba(11, 15, 25, 0.9);
    --bg-table: rgba(30, 41, 59, 0.2);
    --bg-table-header: rgba(22, 28, 45, 0.8);
    --bg-input: rgba(15, 23, 42, 0.6);
    --bg-input-focus: rgba(15, 23, 42, 0.8);
    --bg-stat-box: rgba(30, 41, 59, 0.3);
    --bg-session-item: rgba(30, 41, 59, 0.2);
    --bg-session-item-hover: rgba(30, 41, 59, 0.5);
    --border-glow: rgba(6, 182, 212, 0.2);
    --border-light: rgba(255, 255, 255, 0.08);
    
    /* Colores Temáticos */
    --cyan: #06b6d4;
    --cyan-hover: #0891b2;
    --purple: #8b5cf6;
    --purple-hover: #7c3aed;
    --emerald: #10b981;
    --emerald-hover: #059669;
    --amber: #fbbf24;
    --rose: #f43f5e;
    
    /* Textos */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    /* Sombras y Efectos */
    --shadow-main: 0 10px 30px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 20px rgba(6, 182, 212, 0.15);
}

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

body {
    font-family: 'Outfit', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(6, 182, 212, 0.12) 0%, transparent 45%);
    background-attachment: fixed;
}

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

/* Header de la Aplicación */
.app-navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 2rem;
    background: var(--bg-nav);
    backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 100;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand img.logo-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--cyan);
    box-shadow: var(--shadow-glow);
    transition: var(--transition-smooth);
}

.brand img.logo-avatar:hover {
    transform: scale(1.1) rotate(5deg);
}

.brand-text h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 1px;
    background: linear-gradient(135deg, var(--text-primary), var(--cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-text p {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* Botones y Navegación del Header */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Contenido Principal */
.app-content {
    flex: 1;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* Tarjetas y Contenedores con Efecto Glassmorphism */
.glass-panel {
    background: var(--bg-surface);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow-main);
    transition: var(--transition-smooth);
}

.glass-panel:hover {
    border-color: rgba(6, 182, 212, 0.15);
}

/* Grid de Tarjetas de Sesión */
.session-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}

.session-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 14px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.session-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--purple);
    transition: var(--transition-smooth);
}

.session-card.status-active::before {
    background: var(--emerald);
}

.session-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.15);
}

.session-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.session-badge-date {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--cyan);
    background: rgba(6, 182, 212, 0.08);
    padding: 0.25rem 0.6rem;
    border-radius: 99px;
    border: 1px solid rgba(6, 182, 212, 0.15);
}

.session-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.session-card .topic {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.session-card .trainer {
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

/* Pulsar animado para capacitaciones en curso */
.status-pulsar {
    display: inline-block;
    width: 8px;
    height: 8px;
    background-color: var(--emerald);
    border-radius: 50%;
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
    animation: pulsar 1.5s infinite;
    vertical-align: middle;
    margin-right: 0.4rem;
}

@keyframes pulsar {
    0% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
    }
    70% {
        transform: scale(1);
        box-shadow: 0 0 0 6px rgba(16, 185, 129, 0);
    }
    100% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
    }
}

/* Formularios de Entrada Estilizados */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-control, .form-select {
    width: 100%;
    min-width: 0;
    padding: 0.75rem 1rem;
    background: var(--bg-input);
    border: 1px solid var(--border-light);
    border-radius: 10px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition-smooth);
}

.form-control:focus, .form-select:focus {
    outline: none;
    border-color: var(--cyan);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
    background: var(--bg-input-focus);
}

.form-grid-2 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

@media (min-width: 480px) {
    .form-grid-2 {
        grid-template-columns: 1fr 1fr;
    }
}

.form-select option {
    background-color: var(--bg-main);
    color: var(--text-primary);
}

/* Botones Premium */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem 1.25rem;
    border-radius: 10px;
    font-family: inherit;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--cyan), var(--purple));
    color: #fff;
    box-shadow: 0 4px 15px rgba(6, 182, 212, 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(6, 182, 212, 0.4);
    background: linear-gradient(135deg, #0bc5e8, #9a6dff);
}

.btn-success {
    background: var(--emerald);
    color: #fff;
}

.btn-success:hover {
    background: var(--emerald-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
}

.btn-outline:hover {
    border-color: var(--cyan);
    color: var(--cyan);
    background: rgba(6, 182, 212, 0.05);
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
    border-radius: 6px;
}

.btn-action-cyan {
    background: rgba(6, 182, 212, 0.06);
    color: var(--cyan);
    border: 1px solid rgba(6, 182, 212, 0.3);
}
.btn-action-cyan:hover {
    background: var(--cyan);
    border-color: var(--cyan);
    color: #0b0f19;
    font-weight: 700;
    transform: translateY(-1px);
}

.btn-action-rose {
    background: rgba(244, 63, 94, 0.06);
    color: var(--rose);
    border: 1px solid rgba(244, 63, 94, 0.3);
}
.btn-action-rose:hover {
    background: var(--rose);
    border-color: var(--rose);
    color: #fff;
    transform: translateY(-1px);
}

.btn-action-emerald {
    background: rgba(16, 185, 129, 0.06);
    color: var(--emerald);
    border: 1px solid rgba(16, 185, 129, 0.3);
}
.btn-action-emerald:hover {
    background: var(--emerald);
    border-color: var(--emerald);
    color: #fff;
    transform: translateY(-1px);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* Modales */
.custom-modal {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(11, 15, 25, 0.75);
    backdrop-filter: blur(8px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.custom-modal.active {
    opacity: 1;
    pointer-events: all;
}

.modal-content {
    background: var(--bg-modal);
    border: 1px solid var(--border-light);
    border-radius: 18px;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
    overflow: hidden;
    transform: scale(0.9);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-content form {
    display: flex;
    flex-direction: column;
    flex: 1;
    overflow: hidden;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-light);
    flex-shrink: 0;
}

.modal-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.btn-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.25rem;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-close:hover {
    color: var(--rose);
}

.modal-body {
    padding: 1.5rem;
    flex: 1;
    overflow-y: auto;
}

.modal-footer {
    padding: 1.25rem 1.5rem;
    border-top: 1px solid var(--border-light);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    flex-shrink: 0;
}

/* Tablas Modernas */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    border-radius: 12px;
    border: 1px solid var(--border-light);
    background: var(--bg-table);
}

.custom-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.custom-table th {
    background: var(--bg-table-header);
    padding: 1rem 1.25rem;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-light);
}

.custom-table td {
    padding: 0.9rem 1.25rem;
    font-size: 0.9rem;
    color: var(--text-primary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.custom-table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

/* Pestañas (Tabs) */
.tab-container {
    display: flex;
    border-bottom: 1px solid var(--border-light);
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.tab-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 0.75rem 0.25rem;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    position: relative;
    transition: var(--transition-smooth);
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--cyan);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--cyan);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Vista de Formularios */
.hidden {
    display: none !important;
}

/* Panel de Administración */
.admin-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 992px) {
    .admin-grid {
        grid-template-columns: 350px 1fr;
    }
}

.panel-header-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

/* Dashboard de Estadísticas */
.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-box {
    background: var(--bg-stat-box);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 1.25rem;
    text-align: center;
}

.stat-box h4 {
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    letter-spacing: 0.5px;
}

.stat-box .number {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--cyan);
    background: linear-gradient(135deg, var(--text-primary), var(--cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Pie de Página */
.app-footer {
    background: var(--bg-footer);
    border-top: 1px solid var(--border-light);
    padding: 1.5rem 2rem;
    margin-top: 3rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.footer-badge {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-light);
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    color: var(--text-secondary);
}

/* Centrar tarjetas de login y registro */
.card-center-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 200px);
}

.login-card {
    width: 100%;
    max-width: 420px;
}

.login-card h2 {
    margin-bottom: 0.5rem;
}

.login-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* Auto-complete feedback */
.c-info-card {
    background: rgba(16, 185, 129, 0.08);
    border: 1px solid rgba(16, 185, 129, 0.25);
    border-radius: 10px;
    padding: 1rem;
    margin-bottom: 1.5rem;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

.c-info-card h4 {
    color: var(--emerald);
    font-size: 0.95rem;
    margin-bottom: 0.4rem;
}

.c-info-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Listado de Sesiones Admin */
.admin-sessions-list {
    max-height: 520px;
    overflow-y: auto;
    padding-right: 0.25rem;
}

/* Scrollbar personalizado */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: rgba(11, 15, 25, 0.5);
}

::-webkit-scrollbar-thumb {
    background: rgba(6, 182, 212, 0.3);
    border-radius: 99px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(6, 182, 212, 0.5);
}

.admin-session-item {
    background: var(--bg-session-item);
    border: 1px solid var(--border-light);
    border-radius: 10px;
    padding: 1rem;
    margin-bottom: 0.75rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.admin-session-item:hover, .admin-session-item.selected {
    background: var(--bg-session-item-hover);
    border-color: var(--cyan);
}

.admin-session-item.selected {
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.1);
}

.admin-session-item h5 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.admin-session-item p {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.admin-session-item .badge {
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
}

.badge-active { background: rgba(16, 185, 129, 0.15); color: var(--emerald); border: 1px solid rgba(16, 185, 129, 0.25); }
.badge-pending { background: rgba(251, 191, 36, 0.15); color: var(--amber); border: 1px solid rgba(251, 191, 36, 0.25); }
.badge-closed { background: rgba(255, 255, 255, 0.05); color: var(--text-muted); border: 1px solid var(--border-light); }

/* Acciones rápidas de items */
.item-actions {
    display: flex;
    gap: 0.4rem;
}

.btn-icon {
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-icon:hover {
    background: rgba(6, 182, 212, 0.1);
    border-color: var(--cyan);
    color: var(--cyan);
}

.btn-icon.edit:hover {
    background: rgba(251, 191, 36, 0.1);
    border-color: var(--amber);
    color: var(--amber);
}

.btn-icon.close-session:hover {
    background: rgba(244, 63, 94, 0.1);
    border-color: var(--rose);
    color: var(--rose);
}

/* Limitar altura de tabla de asistencia en admin y agregar scroll vertical */
.admin-grid .table-responsive {
    max-height: 620px;
    overflow-y: auto;
}

/* Encabezados de tabla pegajosos con fondo sólido para evitar superposición */
.admin-grid .custom-table th {
    position: sticky;
    top: 0;
    background: var(--bg-modal);
    z-index: 2;
    box-shadow: inset 0 -1px 0 var(--border-light);
}