* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --secondary-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --dark-color: #1f2937;
    --light-color: #f3f4f6;
    --border-color: #e5e7eb;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f9fafb;
    color: var(--dark-color);
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0;
}

/* NAVBAR */
.navbar {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e40af 100%);
    color: white;
    padding: 20px 40px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
    gap: 20px;
}

.navbar-brand {
    width: 100%;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
}

.navbar-brand h1 {
    font-size: 28px;
    margin-bottom: 5px;
    font-weight: 700;
}

.navbar-brand p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.9);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 15px;
    width: 100%;
    justify-content: space-around;
    flex-wrap: wrap;
    align-items: center;
}

.navbar-usuario {
    display: none;
}

.nav-link {
    color: white;
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 5px;
    transition: all 0.3s ease;
    cursor: pointer;
    font-weight: 500;
    position: relative;
    border-bottom: 3px solid transparent;
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.nav-link.active {
    background-color: rgba(255, 255, 255, 0.25);
    border-bottom: 3px solid white;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* HAMBURGUESA MENU */
.hamburger {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    margin-right: 15px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: white;
    margin: 5px 0;
    transition: 0.3s;
    border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(10px, 10px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

/* RESPONSIVE - TABLETS (768px y abajo) */
@media (max-width: 768px) {
    .navbar {
        padding: 15px 20px;
        gap: 15px;
    }

    .navbar-brand {
        width: 100%;
        text-align: center;
        margin-bottom: 10px;
    }

    .navbar-brand h1 {
        font-size: 20px;
        margin-bottom: 3px;
    }

    .navbar-brand p {
        font-size: 12px;
    }

    .hamburger {
        display: flex;
        position: absolute;
        top: 15px;
        left: 20px;
    }

    .nav-links {
        gap: 10px;
        order: 4;
        width: 100%;
        justify-content: space-around;
        flex-wrap: wrap;
    }

    .nav-link {
        padding: 8px 15px;
        font-size: 14px;
    }

    .navbar-usuario {
        display: none;
    }

    .seccion {
        padding: 20px;
    }

    .fila {
        flex-direction: column;
    }

    .grupo {
        width: 100%;
    }

    h2 {
        font-size: 20px;
    }
}

/* RESPONSIVE - TELEFONOS (480px y abajo) */
@media (max-width: 480px) {
    .navbar {
        padding: 60px 15px 15px;
    }

    .navbar-brand h1 {
        font-size: 18px;
    }

    .navbar-brand p {
        font-size: 11px;
    }

    .nav-links {
        gap: 8px;
        justify-content: space-around;
        flex-wrap: wrap;
    }

    .nav-link {
        padding: 6px 12px;
        font-size: 12px;
    }

    .navbar-usuario {
        display: none;
    }

    .seccion {
        padding: 15px;
    }

    .btn, button {
        padding: 8px 12px;
        font-size: 12px;
    }

    table {
        font-size: 11px;
    }

    .modal-contenido {
        width: 95%;
    }
}

/* SECCIONES */
.seccion {
    display: none;
    padding: 40px;
    animation: fadeIn 0.3s ease-in;
}

.seccion.activa {
    display: block;
}

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

.seccion-contenido {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.seccion-contenido h2 {
    color: var(--dark-color);
    margin-bottom: 25px;
    font-size: 28px;
    border-bottom: 3px solid var(--primary-color);
    padding-bottom: 10px;
}

/* FORMULARIOS */
.formulario {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.fila {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.grupo {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.grupo label {
    font-weight: 600;
    color: var(--dark-color);
    font-size: 14px;
}

.grupo input,
.grupo select,
.grupo textarea {
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.3s;
}

.grupo input:focus,
.grupo select:focus,
.grupo textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.grupo textarea {
    resize: vertical;
    min-height: 100px;
}

/* ASISTENTES */
.seccion-asistentes {
    background: var(--light-color);
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
}

.seccion-asistentes h3 {
    margin-bottom: 15px;
    color: var(--dark-color);
}

.grupo-asistentes {
    margin-bottom: 15px;
}

.grupo-asistentes h4 {
    font-size: 14px;
    color: var(--dark-color);
    margin-bottom: 10px;
}

.fila-asistentes {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.total-asistentes {
    background: white;
    padding: 15px;
    border-radius: 5px;
    text-align: center;
    margin-top: 15px;
    font-size: 18px;
    color: var(--primary-color);
    font-weight: bold;
}

/* BOTONES */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.btn-primary:hover {
    background-color: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background-color: #059669;
    transform: translateY(-2px);
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
    padding: 8px 16px;
    font-size: 14px;
}

.btn-danger:hover {
    background-color: #dc2626;
}

.btn-warning {
    background-color: var(--warning-color);
    color: white;
    padding: 8px 16px;
    font-size: 14px;
}

.btn-warning:hover {
    background-color: #d97706;
}

.btn-info {
    background-color: #06b6d4;
    color: white;
    padding: 8px 16px;
    font-size: 14px;
}

.btn-info:hover {
    background-color: #0891b2;
}

.btn-success {
    background-color: #10b981;
    color: white;
}

.btn-success:hover {
    background-color: #059669;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

/* TABLA */
.controles-tabla {
    margin-bottom: 20px;
}

.tabla-contenedor {
    overflow-x: auto;
}

.tabla {
    width: 100%;
    border-collapse: collapse;
    background: white;
    min-width: 1200px;
}

.tabla thead {
    background-color: var(--primary-color);
    color: white;
    position: sticky;
    top: 0;
}

.tabla th {
    padding: 12px 8px;
    text-align: left;
    font-weight: 600;
    font-size: 13px;
    white-space: nowrap;
}

.tabla td {
    padding: 10px 8px;
    border-bottom: 1px solid var(--border-color);
    font-size: 13px;
}

.tabla tbody tr:hover {
    background-color: var(--light-color);
}

.tabla tbody tr:nth-child(even) {
    background-color: #fafafa;
}

.acciones {
    display: flex;
    gap: 10px;
}

/* REPORTES */
.controles-reporte {
    background: var(--light-color);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 30px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.controles-reporte .grupo {
    gap: 10px;
}

.controles-reporte input,
.controles-reporte button {
    padding: 10px;
    border-radius: 5px;
    border: 1px solid var(--border-color);
}

.estadisticas {
    animation: slideDown 0.3s ease-in;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.cards-estadisticas {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    text-align: center;
    border-top: 4px solid var(--primary-color);
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.card h4 {
    color: var(--dark-color);
    margin-bottom: 10px;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.card .numero {
    font-size: 32px;
    font-weight: bold;
    color: var(--primary-color);
}

.graficas-contenedor {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 30px;
}

.grafica {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.grafica h4 {
    margin-bottom: 20px;
    color: var(--dark-color);
    font-size: 18px;
}

.grafica canvas {
    max-height: 300px;
}

/* MODAL */
.modal {
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s;
}

.modal-contenido {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.cerrar {
    color: var(--dark-color);
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s;
}

.cerrar:hover {
    color: var(--danger-color);
}

.modal-contenido h2 {
    margin-bottom: 20px;
    color: var(--dark-color);
}

.botones-modal {
    display: flex;
    gap: 10px;
    margin-top: 20px;
    justify-content: flex-end;
}

/* MENSAJES */
.mensaje-info {
    background: #dbeafe;
    border-left: 4px solid var(--primary-color);
    padding: 15px;
    border-radius: 5px;
    color: #1e40af;
    text-align: center;
}

.mensaje-exito {
    background: #dcfce7;
    border-left: 4px solid var(--secondary-color);
    padding: 15px;
    border-radius: 5px;
    color: #166534;
}

.mensaje-error {
    background: #fee2e2;
    border-left: 4px solid var(--danger-color);
    padding: 15px;
    border-radius: 5px;
    color: #991b1b;
}

/* RESPONSIVO */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 20px;
        padding: 15px 20px;
    }

    .navbar-brand h1 {
        font-size: 20px;
    }

    .nav-links {
        gap: 15px;
    }

    .nav-link {
        padding: 8px 15px;
        font-size: 14px;
    }

    .seccion {
        padding: 20px;
    }

    .seccion-contenido {
        padding: 20px;
    }

    .fila,
    .controles-reporte {
        grid-template-columns: 1fr;
    }

    .tabla {
        font-size: 12px;
    }

    .tabla th,
    .tabla td {
        padding: 10px;
    }

    .cards-estadisticas {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }

    .graficas-contenedor {
        grid-template-columns: 1fr;
    }

    .acciones {
        flex-direction: column;
    }

    .modal-contenido {
        width: 95%;
    }
}

@media (max-width: 480px) {
    .navbar-brand h1 {
        font-size: 18px;
    }

    .nav-links {
        flex-direction: column;
        gap: 10px;
    }

    .seccion-contenido h2 {
        font-size: 22px;
    }

    .card .numero {
        font-size: 24px;
    }

    .fila-asistentes {
        grid-template-columns: 1fr;
    }
}

/* USUARIO EN NAVBAR */
.navbar-usuario {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-left: auto;
}

#usuarioNombre {
    color: white;
    font-weight: 600;
    font-size: 14px;
}

.btn-logout {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 8px 16px;
    border-radius: 5px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-logout:hover {
    background-color: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
}

/* ADMINISTRACIÓN */
.admin-toolbar {
    margin-bottom: 20px;
    display: flex;
    gap: 10px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 15px;
}

.form-group label {
    font-weight: 600;
    color: var(--dark-color);
    font-size: 14px;
}

.form-group input[type="file"],
.form-group input,
.form-group textarea,
.form-group select {
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 14px;
    font-family: inherit;
}

.form-group input[type="file"] {
    padding: 8px;
}

/* GALERÍA DE FOTOS */
.galeria-fotos {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.foto-item {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.foto-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.foto-item img,
.foto-item video {
    width: 100%;
    height: 150px;
    object-fit: cover;
    display: block;
}

.foto-info {
    padding: 10px;
}

.foto-info p {
    font-size: 12px;
    color: #6b7280;
    margin: 5px 0;
    word-break: break-word;
}

.foto-acciones {
    display: flex;
    gap: 5px;
    margin-top: 10px;
}

.foto-acciones button {
    flex: 1;
    padding: 5px;
    font-size: 11px;
}

/* ESTILOS MEJORADOS PARA FOTOS */

.modal-fotos {
    max-width: 800px;
}

.modal-detalles {
    max-width: 900px;
}

.detalles-platica {
    background-color: #f0f9ff;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 25px;
    border-left: 4px solid var(--primary-color);
}

.detalles-platica h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 16px;
}

.detalles-fila {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 15px;
}

.detalles-item {
    background-color: white;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.detalles-item label {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 14px;
    display: block;
    margin-bottom: 5px;
}

.detalles-item p {
    color: var(--dark-color);
    font-size: 16px;
    margin: 0;
}

.galeria-detalles {
    background-color: #f9fafb;
    padding: 20px;
    border-radius: 10px;
    margin-top: 25px;
}

.galeria-detalles h3 {
    margin-bottom: 20px;
    color: var(--dark-color);
}

.galeria-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
}

.seccion-cargar-fotos {
    background-color: #f0f9ff;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 25px;
    border-left: 4px solid var(--primary-color);
}

.opciones-subida {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 20px;
}

.btn-opcion {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 20px;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border: 2px dashed var(--primary-color);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    color: var(--primary-color);
}

.btn-opcion:hover {
    background: linear-gradient(135deg, #e0f2fe 0%, #bae6fd 100%);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(37, 99, 235, 0.2);
}

.btn-opcion .icono {
    font-size: 32px;
}

.preview-foto {
    background-color: white;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 15px;
    border: 2px solid var(--border-color);
}

.preview-foto h3 {
    margin-bottom: 15px;
    color: var(--dark-color);
}

.contenedor-preview {
    text-align: center;
    margin-bottom: 15px;
}

.contenedor-preview img,
.contenedor-preview video {
    max-width: 100%;
    max-height: 400px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.seccion-descripcion {
    background-color: white;
    padding: 15px;
    border-radius: 8px;
}

.seccion-descripcion .form-group {
    margin-bottom: 15px;
}

.seccion-descripcion textarea {
    min-height: 80px;
    resize: vertical;
}

.btn-grande {
    width: 100%;
    padding: 15px;
    font-size: 16px;
    font-weight: 600;
}

.btn-secundario {
    padding: 10px 20px;
    background-color: #ef4444;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn-secundario:hover {
    background-color: #dc2626;
}

.galeria-fotos-mejorada {
    margin-top: 30px;
}

.galeria-fotos-mejorada h3 {
    margin-bottom: 20px;
    color: var(--dark-color);
    font-size: 18px;
}

.galeria-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
}

.foto-card {
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.foto-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

.foto-preview-container {
    width: 100%;
    height: 180px;
    overflow: hidden;
    background-color: #f3f4f6;
    display: flex;
    align-items: center;
    justify-content: center;
}

.foto-preview-container img,
.foto-preview-container video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.foto-info-mejorada {
    padding: 12px;
}

.foto-info-mejorada p {
    font-size: 14px;
    color: #666;
    margin: 5px 0;
}

.foto-fecha {
    font-size: 12px;
    color: #999;
    margin-top: 8px;
}

.foto-acciones-mejorada {
    display: flex;
    gap: 8px;
    margin-top: 10px;
}

.foto-acciones-mejorada button {
    flex: 1;
    padding: 8px 12px;
    font-size: 13px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn-eliminar-foto {
    background-color: #ef4444;
    color: white;
}

.btn-eliminar-foto:hover {
    background-color: #dc2626;
}

/* RESPONSIVE PARA FOTOS */
@media (max-width: 768px) {
    .opciones-subida {
        grid-template-columns: 1fr;
    }

    .btn-opcion {
        padding: 15px;
    }

    .btn-opcion .icono {
        font-size: 28px;
    }

    .galeria-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 10px;
    }

    .foto-preview-container {
        height: 120px;
    }

    .seccion-cargar-fotos {
        padding: 15px;
    }

    .btn-grande {
        padding: 12px;
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .opciones-subida {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .btn-opcion {
        padding: 12px;
        font-size: 14px;
    }

    .btn-opcion .icono {
        font-size: 24px;
    }

    .galeria-grid {
        grid-template-columns: 1fr;
    }

    .foto-preview-container {
        height: 200px;
    }

    .foto-card {
        margin-bottom: 10px;
    }

    .seccion-cargar-fotos {
        padding: 12px;
        margin-bottom: 15px;
    }

    .contenedor-preview img,
    .contenedor-preview video {
        max-height: 250px;
    }

    .preview-foto {
        padding: 15px;
    }

    .btn-grande {
        padding: 12px;
        font-size: 13px;
    }

    .modal-fotos {
        max-width: 95%;
    }
}