/* =========================================
   1. VARIABLES Y ESTILOS GLOBALES
========================================= */
:root {
    /* Paleta Profesional */
    --color-primario: #2563eb;
    --color-primario-hover: #1d4ed8;
    --color-secundario: #64748b;
    --color-exito: #10b981;
    --color-peligro: #ef4444;
    --color-advertencia: #f59e0b;
    --color-fondo: #f1f5f9;
    --color-fondo-tarjeta: #ffffff;
    --color-texto: #1e293b;
    --color-texto-claro: #64748b;
    --color-borde: #e2e8f0;
    
    /* Sombras y Formas */
    --sombra-suave: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --sombra-media: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --sombra-fuerte: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    --radio-borde: 12px;
    --radio-boton: 8px;
    --transicion: all 0.2s ease-in-out;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    margin: 0;
    background-color: var(--color-fondo);
    color: var(--color-texto);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.shadow-sm { box-shadow: var(--sombra-suave); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); border: 0; }

/* =========================================
   2. MÓDULO DE LOGIN
========================================= */
.login-container {
    position: fixed; top: 0; left: 0; width: 100vw; height: 100vh;
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    display: grid; place-items: center;
    z-index: 1000; padding: 1rem; box-sizing: border-box;
}

.login-form {
    background-color: var(--color-fondo-tarjeta);
    padding: 3rem 2rem;
    border-radius: var(--radio-borde);
    box-shadow: var(--sombra-fuerte);
    width: 100%; max-width: 420px;
    text-align: center;
    animation: fadeIn 0.3s ease-out;
}

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

.admin-icon { font-size: 3rem; color: var(--color-primario); margin-bottom: 1rem; }
.login-form h2 { margin: 0 0 0.5rem; font-size: 1.5rem; font-weight: 700; color: var(--color-texto); }
.login-form p { margin-bottom: 2rem; color: var(--color-texto-claro); font-size: 0.95rem; }

.login-form input[type="password"] {
    width: 100%; padding: 14px 16px; margin-bottom: 1.5rem;
    border: 1px solid var(--color-borde); border-radius: var(--radio-boton);
    font-size: 1rem; box-sizing: border-box; transition: var(--transicion);
}
.login-form input[type="password"]:focus {
    outline: none; border-color: var(--color-primario);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

.btn {
    display: inline-flex; justify-content: center; align-items: center; gap: 8px;
    padding: 12px 20px; font-size: 1rem; font-weight: 600;
    border: none; border-radius: var(--radio-boton); cursor: pointer;
    transition: var(--transicion); width: 100%;
}
.btn-primary { background-color: var(--color-primario); color: white; }
.btn-primary:hover { background-color: var(--color-primario-hover); transform: translateY(-1px); }


/* Enlace para volver desde el Login */
.link-volver-login {
    display: inline-block;
    margin-top: 1.5rem;
    color: var(--color-secundario); /* Color gris claro */
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transicion);
}

.link-volver-login:hover {
    color: var(--color-primario); /* Se pone azul al pasar el mouse */
    text-decoration: underline;
}
/* =========================================
   3. LAYOUT PRINCIPAL Y CABECERA
========================================= */
.dashboard-container {
    max-width: 1400px; margin: 0 auto; padding: 2rem;
}

.admin-header {
    background-color: var(--color-fondo-tarjeta);
    padding: 1.25rem 2rem; display: flex; justify-content: space-between; align-items: center;
    box-shadow: var(--sombra-suave); border-bottom: 1px solid var(--color-borde);
    position: sticky; top: 0; z-index: 100;
}
.header-brand { display: flex; align-items: center; gap: 10px; color: var(--color-primario); }
.header-brand h1 { margin: 0; font-size: 1.4rem; font-weight: 700; color: var(--color-texto); }
.header-actions { display: flex; align-items: center; gap: 1.5rem; }

.nav-link { 
    display: flex; align-items: center; gap: 6px;
    color: var(--color-secundario); text-decoration: none; font-weight: 500; font-size: 0.95rem; transition: var(--transicion);
}
.nav-link:hover { color: var(--color-primario); }

.btn-logout {
    background-color: transparent; color: var(--color-peligro); border: 1px solid var(--color-peligro);
    padding: 8px 16px; border-radius: var(--radio-boton); font-weight: 600; cursor: pointer;
    display: flex; align-items: center; gap: 6px; transition: var(--transicion);
}
.btn-logout:hover { background-color: var(--color-peligro); color: white; }

/* =========================================
   4. SISTEMA DE PESTAÑAS
========================================= */
.tabs-container {
    display: flex;
    flex-direction: row; 
    flex-wrap: nowrap; 
    gap: 1.5rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--color-borde);
    overflow-x: auto; 
}
.tab-btn {
    display: flex; align-items: center; gap: 8px;
    background: none; border: none; padding: 12px 16px;
    font-size: 1.05rem; font-weight: 600; color: var(--color-secundario);
    cursor: pointer; position: relative; transition: var(--transicion);
    white-space: nowrap; 
}
.tab-btn:hover { color: var(--color-primario); }
.tab-btn.active { color: var(--color-primario); }
.tab-btn.active::after {
    content: ''; position: absolute; bottom: -2px; left: 0;
    width: 100%; height: 3px; background-color: var(--color-primario);
    border-radius: 3px 3px 0 0;
}
.tab-content { display: none; animation: fadeIn 0.3s ease-out; }
.tab-content.active { display: block; }
/* =========================================
   5. PANEL DE INDICADORES (KPIs Y GRÁFICOS)
========================================= */
.dashboard-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem; 
    margin-bottom: 2rem;
}

/* Estilo base de las tarjetas (sin fondo blanco ni borde) */
.metric-card {
    padding: 1.25rem;
    border-radius: var(--radio-borde); 
    display: flex; 
    align-items: center; 
    gap: 1rem;
    transition: var(--transicion); 
    border: none; /* Quitamos el borde porque ahora tienen color de fondo */
    min-width: 0; 
}
.metric-card:hover { 
    transform: translateY(-3px); 
    box-shadow: var(--sombra-media); 
}

/* --- COLORES SÓLIDOS DE FONDO PARA CADA TARJETA --- */
/* 1. Tarjeta Total (Gris azulado oscuro) */
.metric-card:not([data-estado]) { background-color: var(--color-secundario); }
/* 2. Tarjeta Abiertos (Azul) */
.metric-card[data-estado="abierto"] { background-color: var(--color-primario); }
/* 3. Tarjeta En Proceso (Naranja) */
.metric-card[data-estado="en proceso"] { background-color: var(--color-advertencia); }
/* 4. Tarjeta Resueltos (Verde) */
.metric-card[data-estado="resuelto"] { background-color: var(--color-exito); }

/* --- ESTILO DE LOS ÍCONOS --- */
/* Fondo semi-transparente blanco para que el ícono resalte sobre el color */
.metric-icon { 
    width: 50px; height: 50px; 
    border-radius: 12px; 
    display: flex; justify-content: center; align-items: center; flex-shrink: 0; 
    background-color: rgba(255, 255, 255, 0.2); 
    color: #ffffff; /* Ícono blanco */
}
.metric-icon span { font-size: 28px; }

/* --- ESTILO DEL TEXTO --- */
.metric-data { min-width: 0; flex: 1; }
.metric-data h4 {
    margin: 0; 
    color: rgba(255, 255, 255, 0.85); /* Título en blanco ligeramente suave */
    font-size: 0.85rem; font-weight: 600; 
    text-transform: uppercase; letter-spacing: 0.5px;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis; 
}
.metric-data p {
    margin: 0; 
    font-size: 1.7rem; 
    font-weight: 700; 
    color: #ffffff; /* Número en blanco puro */
    line-height: 1.1;
}

/* Gráficos de abajo */
.dashboard-charts {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem; margin-bottom: 3rem;
}
.chart-container {
    background-color: var(--color-fondo-tarjeta); padding: 1.5rem;
    border-radius: var(--radio-borde); border: 1px solid var(--color-borde);
}
.chart-container h3 { margin: 0 0 1rem 0; font-size: 1.1rem; color: var(--color-texto); font-weight: 600;}

/* =========================================
   6. CONTROLES DE GESTIÓN Y FILTROS
========================================= */
.section-title {
    display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem;
}
.section-title h2 { font-size: 1.4rem; margin: 0; }
.btn-excel {
    display: flex; align-items: center; gap: 8px; padding: 10px 16px;
    background-color: #10b981; color: white; font-weight: 600; border: none;
    border-radius: var(--radio-boton); cursor: pointer; transition: var(--transicion);
}
.btn-excel:hover { background-color: #059669; }

.gestion-controles {
    background-color: var(--color-fondo-tarjeta); padding: 1.5rem; border-radius: var(--radio-borde);
    border: 1px solid var(--color-borde); margin-bottom: 2rem;
    display: flex; flex-direction: column; gap: 1.5rem;
}
.control-group { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; }

/* Buscador */
.search-bar { position: relative; flex-grow: 1; }
.search-icon { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--color-texto-claro); }
.search-bar input {
    width: 100%; padding: 12px 16px 12px 45px; border: 1px solid var(--color-borde);
    border-radius: var(--radio-boton); font-size: 0.95rem; box-sizing: border-box; transition: var(--transicion);
}
.search-bar input:focus { outline: none; border-color: var(--color-primario); box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1); }

/* Filtros de Fecha */
.input-with-icon { display: flex; align-items: center; gap: 10px; }
.input-with-icon label { font-size: 0.9rem; font-weight: 600; color: var(--color-texto-claro); }
.input-with-icon input[type="date"] {
    padding: 10px; border: 1px solid var(--color-borde); border-radius: var(--radio-boton);
    font-family: inherit; font-size: 0.9rem; color: var(--color-texto);
}

/* Botones de Ordenado */
.sort-buttons { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.divider { width: 1px; height: 24px; background-color: var(--color-borde); margin: 0 4px; }
.btn-sort {
    padding: 8px 14px; font-size: 0.85rem; font-weight: 600; color: var(--color-secundario);
    background-color: var(--color-fondo); border: 1px solid var(--color-borde);
    border-radius: 20px; cursor: pointer; transition: var(--transicion);
}
.btn-sort:hover { background-color: #e2e8f0; color: var(--color-texto); }
.btn-sort.active { background-color: var(--color-texto); color: white; border-color: var(--color-texto); }

/* =========================================
   7. LISTA DE TICKETS (MODERNIZADA)
========================================= */
.ticket-list-container { display: flex; flex-direction: column; gap: 1.5rem; }

.ticket {
    border-radius: var(--radio-borde);
    box-shadow: var(--sombra-suave);
    border-left: 6px solid var(--color-secundario);
    transition: var(--transicion);
    overflow: hidden;
}
.ticket:hover { 
    box-shadow: var(--sombra-media); 
    transform: translateY(-2px); 
}

/* =========================================
   7. LISTA DE TICKETS
========================================= */
.ticket-list-container { display: flex; flex-direction: column; gap: 1.5rem; }

.ticket {
    border-radius: var(--radio-borde);
    box-shadow: var(--sombra-suave);
    border: 1px solid var(--color-borde); /* Borde sutil alrededor de toda la tarjeta */
    border-left: 5px solid; /* Borde grueso indicador de estado a la izquierda */
    transition: var(--transicion);
    overflow: hidden;
}
.ticket:hover { box-shadow: var(--sombra-media); }

/* --- FONDOS Y BORDES ORIGINALES --- */
.ticket[data-estado="abierto"] { 
    border-left-color: var(--color-primario); 
    background-color: #f0f6ff; 
}
.ticket[data-estado="en proceso"] { 
    border-left-color: var(--color-advertencia); 
    background-color: #fff8f0; 
}
.ticket[data-estado="resuelto"] { 
    border-left-color: var(--color-exito); 
    background-color: #f1f9f4; 
}

/* --- CABECERA --- */
.ticket-header { 
    padding: 1.25rem 1.5rem; 
    border-bottom: 1px solid rgba(0,0,0,0.05); 
    display: flex; justify-content: space-between; align-items: center; 
}
.ticket-header h3 { margin: 0; font-size: 1.15rem; color: var(--color-texto); font-weight: 700; }
.ticket-timestamp { font-size: 0.85rem; color: var(--color-secundario); font-weight: 500; }

/* --- CUERPO (Texto clásico como en tu imagen) --- */
.ticket-body { padding: 1.5rem; line-height: 1.7; }
.ticket-body p { margin: 0 0 0.85rem 0; font-size: 0.95rem; }
.ticket-body p strong { 
    color: var(--color-texto); 
    min-width: 90px; 
    display: inline-block;
    font-weight: 600;
}

/* --- SECCIÓN DE COMENTARIOS --- */
.ticket-comments { 
    padding: 1rem 1.5rem; 
    background-color: rgba(255, 255, 255, 0.4); 
    border-top: 1px solid rgba(0,0,0,0.05);
}
.ticket-comments h4 { margin: 0 0 0.75rem 0; font-size: 0.95rem; font-weight: 600; color: var(--color-texto); }
.ticket-comments ul { margin: 0; padding-left: 20px; max-height: 150px; overflow-y: auto; }
.ticket-comments li { padding: 0.25rem 0; color: var(--color-texto); line-height: 1.5; font-size: 0.9rem; }

.comment-form { display: flex; gap: 0.5rem; margin-top: 1rem; }
.comment-input { 
    flex-grow: 1; padding: 10px 14px; 
    border: 1px solid var(--color-borde); 
    border-radius: var(--radio-borde); 
    font-size: 0.9rem; background-color: #fff;
}
.comment-form button {
    padding: 10px 15px; font-size: 0.9rem; font-weight: 600; color: #fff;
    background-color: var(--color-secundario); border: none; border-radius: var(--radio-borde);
    cursor: pointer; transition: background-color 0.2s ease;
}
.comment-form button:hover { background-color: #475569; }

/* --- PIE DEL TICKET --- */
.ticket-footer { 
    padding: 1rem 1.5rem; 
    border-top: 1px solid rgba(0,0,0,0.05); 
    display: flex; justify-content: space-between; 
}
.status-select { 
    padding: 8px 12px; border-radius: 6px; 
    border: 1px solid var(--color-borde); 
    font-weight: 600; outline: none; background-color: #fff;
}
.btn-delete { 
    background: white; color: var(--color-peligro); 
    border: 1px solid var(--color-peligro); 
    padding: 6px 14px; border-radius: 6px; 
    cursor: pointer; font-weight: 600; transition: var(--transicion); 
}
.btn-delete:hover { background: var(--color-peligro); color: white; }

/* =========================================
   8. RESPONSIVIDAD (MÓVILES)
========================================= */
@media (max-width: 768px) {
    .admin-header { flex-direction: column; gap: 1rem; align-items: flex-start; }
    .header-actions { width: 100%; justify-content: space-between; }
    
    .dashboard-container { padding: 1rem; }
    .gestion-controles { padding: 1rem; flex-direction: column; align-items: stretch; }
    .date-filters, .search-bar { width: 100%; }
    
    .sort-buttons { flex-direction: column; }
    .btn-sort { width: 100%; box-sizing: border-box; }
    
    .dashboard-charts { grid-template-columns: 1fr; }
}