/* ==========================================================================
   KT CLOUD - HOJA DE ESTILOS PRINCIPAL (TEMA CLARO / LIGHT THEME)
   ========================================================================== */

:root {
    /* TEMA CLARO: CLEAN CLOUD (Estilo Stripe / Apple) */
    --bg-main: #f8fafc;         /* Fondo principal gris muy claro */
    --bg-nav: #ffffff;          /* Barra de navegación blanca */
    --bg-card: #ffffff;         /* Tarjetas blancas */
    --bg-hover: #f1f5f9;        /* Efecto al pasar el mouse (gris sutil) */
    --border-color: #e2e8f0;    /* Bordes gris claro */
    
    /* Textos */
    --text-primary: #0f172a;    /* Texto principal casi negro */
    --text-muted: #64748b;      /* Texto secundario gris medio */
    
    /* Colores de Estado */
    --accent: #2563eb;          /* Azul corporativo sólido y fuerte */
    --success: #059669;         /* Verde limpio */
    --danger: #e11d48;          /* Rojo alerta */
    --warning: #d97706;         /* Naranja / Ámbar */
    
    --font-sans: 'Inter', system-ui, sans-serif;
}

*, *::before, *::after {
    box-sizing: border-box;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-sans);
    margin: 0; padding: 0;
    -webkit-font-smoothing: antialiased;
}

/* --- NAV --- */
.top-nav {
    display: flex; justify-content: space-between; align-items: center;
    background-color: var(--bg-nav);
    height: 64px; padding: 0 32px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05); /* Sombra suave para tema claro */
}

/* LOGO */
.nav-brand { display: flex; align-items: center; gap: 8px; cursor: pointer; }
.brand-logo { filter: drop-shadow(0 0 4px rgba(37, 99, 235, 0.2)); transition: transform 0.3s ease; }
.nav-brand:hover .brand-logo { transform: scale(1.05); }
.brand-text { font-size: 1.25rem; font-weight: 700; letter-spacing: 0.5px; color: var(--text-primary); }
.brand-highlight { color: var(--accent); }

/* KPIs */
.kpi-nav-container { display: flex; align-items: center; gap: 24px; margin-right: auto; margin-left: 40px; padding-left: 24px; border-left: 1px solid var(--border-color); }
.kpi-item { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: var(--text-muted); font-weight: 500;}
.kpi-item b { color: var(--text-primary); font-size: 1.1rem; font-weight: 700;}
.text-blue { color: var(--accent); } .text-green { color: var(--success); } .text-red { color: var(--danger); }

/* HERRAMIENTAS */
.nav-tools { display: flex; align-items: center; gap: 24px; }
.token-display { background: var(--bg-main); padding: 6px 12px; border-radius: 6px; font-size: 0.75rem; color: var(--text-muted); border: 1px solid var(--border-color); }
.token-display code { color: var(--warning); font-family: monospace; margin-left: 5px; font-weight: bold; letter-spacing: 1px;}
.nav-links { display: flex; align-items: center; gap: 20px; }
.nav-link { display: flex; align-items: center; gap: 6px; color: var(--text-muted); text-decoration: none; font-size: 0.85rem; font-weight: 600; transition: all 0.2s ease; background: transparent; border: none; cursor: pointer; font-family: var(--font-sans); }
.nav-link svg { width: 18px; height: 18px; transition: transform 0.2s ease; }
.nav-link:hover { color: var(--text-primary); }
.nav-link:hover svg { color: var(--accent); transform: translateY(-2px); }
.btn-logout:hover svg { color: var(--danger); }

/* --- CONTENIDO PRINCIPAL --- */
.main-content { padding: 40px; max-width: 1400px; margin: 0 auto; }
.view-header { margin-bottom: 30px; }
.view-header h1 { margin: 0 0 8px 0; font-size: 1.8rem; }
.sub-text { color: var(--text-muted); font-size: 0.95rem; margin: 0; }
.flex-header { display: flex; justify-content: space-between; align-items: flex-end; }

/* --- ZONAS --- */
.cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }
.zone-card { background: var(--bg-card); padding: 24px; border-radius: 12px; border: 1px solid var(--border-color); display: flex; align-items: center; gap: 16px; cursor: pointer; transition: all 0.2s; box-shadow: 0 2px 4px rgba(0,0,0,0.02); }
.zone-card:hover { transform: translateY(-3px); border-color: var(--accent); background: var(--bg-hover); box-shadow: 0 10px 15px -3px rgba(0,0,0,0.05); }
.zone-icon { width: 48px; height: 48px; background: rgba(37, 99, 235, 0.08); border-radius: 10px; display: flex; justify-content: center; align-items: center; }
.zone-icon svg { width: 24px; height: 24px; color: var(--accent); }
.zone-info h3 { margin: 0 0 4px 0; font-size: 1.1rem; }
.zone-info p { margin: 0; font-size: 0.85rem; color: var(--text-muted); }
.zone-badges { display: flex; gap: 8px; margin-left: auto; flex-direction: column;}
.zone-badge { padding: 4px 8px; border-radius: 6px; font-size: 0.75rem; font-weight: bold; display: inline-block; text-align: center;}
.badge-danger { background: rgba(225, 29, 72, 0.1); color: var(--danger); }
.badge-warning { background: rgba(217, 119, 6, 0.1); color: var(--warning); }


/* --- DISPOSITIVOS (DISEÑO ACORDEÓN) --- */
.device-list-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(350px, 450px)); gap: 20px; justify-content: start; }

.device-row-card { 
    background: var(--bg-card); 
    border: 1px solid var(--border-color); 
    border-radius: 12px;
    display: flex; 
    flex-direction: column; 
    align-items: stretch; 
    padding: 0; 
    overflow: hidden; 
    transition: all 0.3s ease; 
    box-shadow: 0 1px 3px rgba(0,0,0,0.02);
}
.device-row-card.battery-alert { background-color: rgba(225, 29, 72, 0.04); border-color: rgba(225, 29, 72, 0.3); }
.device-row-card:hover { border-color: #cbd5e1; box-shadow: 0 4px 6px rgba(0,0,0,0.04); }

/* 1. Cabecera siempre visible */
.device-main-info { display: flex; justify-content: space-between; align-items: center; padding: 20px; cursor: pointer; width: 100%; transition: background 0.2s ease; }
.device-main-info:hover { background: var(--bg-hover); }

.expand-icon { color: var(--text-muted); transition: transform 0.3s ease; display: flex; align-items: center; margin-right: 15px; }
.device-row-card.expanded .expand-icon { transform: rotate(180deg); }

/* 2. Panel oculto */
.device-expanded-panel { max-height: 0; opacity: 0; overflow: hidden; transition: all 0.3s ease-in-out; background: #f1f5f9; padding: 0 20px; }
.device-row-card.expanded .device-expanded-panel { max-height: 250px; opacity: 1; padding: 15px 20px 20px 20px; border-top: 1px solid var(--border-color); }

/* 3. Rejilla y Etiquetas */
.device-details-grid { display: flex; flex-wrap: wrap; gap: 10px; }
.detail-badge { font-size: 0.75rem; padding: 6px 12px; border-radius: 6px; background: var(--bg-card); border: 1px solid var(--border-color); color: var(--text-muted); display: inline-flex; align-items: center; gap: 6px; font-weight: 600; box-shadow: 0 1px 2px rgba(0,0,0,0.02); }

.badge-cfe { color: var(--success); background: rgba(5, 150, 105, 0.1); border-color: rgba(5, 150, 105, 0.2); }
.badge-bat { color: var(--danger); background: rgba(225, 29, 72, 0.1); border-color: rgba(225, 29, 72, 0.2); }
.badge-volt { color: var(--warning); background: rgba(217, 119, 6, 0.1); border-color: rgba(217, 119, 6, 0.2); }
.badge-health { color: var(--accent); background: rgba(37, 99, 235, 0.1); border-color: rgba(37, 99, 235, 0.2); }
.badge-ip { font-family: monospace; letter-spacing: 0.5px; }

.panel-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 15px; padding-top: 15px; border-top: 1px dashed var(--border-color); }

/* Partes internas de la tarjeta */
.d-left { display: flex; align-items: center; gap: 16px; min-width: 0; flex: 1; }
.d-icon { width: 42px; height: 42px; border-radius: 10px; display: flex; justify-content: center; align-items: center; flex-shrink: 0; }
.d-icon svg { width: 20px; height: 20px; }
.d-icon.active { background: rgba(5, 150, 105, 0.1); color: var(--success); }
.d-icon.offline { background: rgba(100, 116, 139, 0.1); color: var(--text-muted); }
.d-icon.warning { background: rgba(217, 119, 6, 0.1); color: var(--warning); }
.d-texts { min-width: 0; flex: 1; overflow: hidden; }
.d-name { font-weight: 600; font-size: 1.05rem; display: flex; align-items: center; gap: 10px; margin-bottom: 4px; min-width: 0; }
.d-status { font-size: 0.85rem; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.d-status span { font-weight: 600; color: var(--text-primary); }

.d-right { display: flex; gap: 12px; }
.round-btn { width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--border-color); cursor: pointer; display: flex; justify-content: center; align-items: center; transition: 0.2s; box-shadow: 0 2px 4px rgba(0,0,0,0.05); }
.round-btn svg { width: 20px; height: 20px; }
.btn-on { background: var(--success); color: white; border-color: var(--success); }
.btn-on:hover { box-shadow: 0 4px 10px rgba(5, 150, 105, 0.3); }
.btn-off { background: var(--bg-main); color: var(--text-muted); }
.btn-off:hover { background: var(--border-color); color: var(--text-primary); }
.btn-back { display: flex; align-items: center; gap: 8px; background: transparent; border: 1px solid var(--border-color); color: var(--text-primary); padding: 8px 16px; border-radius: 6px; cursor: pointer; font-weight: 600; transition: 0.2s; }
.btn-back:hover { background: var(--bg-hover); border-color: #cbd5e1; }


/* --- ALERTAS FLOTANTES --- */
.alert-container { position: fixed; bottom: 30px; right: 30px; z-index: 9999; display: flex; flex-direction: column; gap: 10px; }
.floating-alert { background: var(--bg-card); padding: 16px 20px; border-radius: 8px; box-shadow: 0 10px 25px rgba(0,0,0,0.15); border-left: 4px solid var(--accent); border-top: 1px solid var(--border-color); border-right: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); min-width: 280px; display: flex; flex-direction: column; gap: 4px; transition: all 0.4s ease; animation: slideIn 0.3s ease-out forwards; }
.floating-alert.danger { border-left-color: var(--danger); }
.floating-alert.success { border-left-color: var(--success); }
.alert-title { font-weight: 700; font-size: 0.95rem; color: var(--text-primary); }
.alert-desc { font-size: 0.85rem; color: var(--text-muted); }
.highlight { color: var(--text-primary); font-weight: bold; }

/* --- TABLAS (Historial) --- */
.table-wrapper { background-color: var(--bg-card); border: 1px solid var(--border-color); border-radius: 8px; overflow-x: auto; margin-top: 24px; box-shadow: 0 1px 3px rgba(0,0,0,0.02); }
table { width: 100%; border-collapse: collapse; text-align: left; }
th, td { padding: 16px 24px; border-bottom: 1px solid var(--border-color); }
th { background-color: var(--bg-main); color: var(--text-muted); font-size: 0.85rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; }
tr:last-child td { border-bottom: none; }
tr:hover { background-color: var(--bg-hover); }
.badge-active { color: var(--danger); font-weight: 600; }
.badge-resolved { color: var(--success); font-weight: 600; }
.empty-state { padding: 40px; text-align: center; color: var(--text-muted); }

/* --- FILTROS HISTORIAL Y MODALES --- */
.history-filter-bar { display: flex; justify-content: space-between; align-items: center; background-color: var(--bg-card); padding: 12px 20px; border-radius: 8px; margin-top: 20px; flex-wrap: wrap; gap: 15px; border: 1px solid var(--border-color); box-shadow: 0 1px 3px rgba(0,0,0,0.02); }
.quick-filters { display: flex; gap: 10px; }
.filter-btn { background-color: transparent; color: var(--text-muted); border: 1px solid var(--border-color); padding: 6px 16px; border-radius: 20px; font-size: 0.85rem; font-weight: 600; cursor: pointer; transition: all 0.3s ease; }
.filter-btn:hover { background-color: var(--bg-hover); color: var(--text-primary); }
.filter-btn.active { background-color: var(--accent); color: white; border-color: var(--accent); }
.right-filters { display: flex; align-items: center; gap: 15px; flex-wrap: wrap; }
.custom-date-filter { display: flex; align-items: center; gap: 10px; background-color: var(--bg-main); padding: 5px 15px; border-radius: 6px; border: 1px solid var(--border-color); }
.custom-date-filter svg { width: 18px; height: 18px; color: var(--text-muted); }

.custom-date-filter input[type="date"] { background: transparent; border: none; color: var(--text-primary); font-family: inherit; font-size: 0.9rem; outline: none; color-scheme: light; }

.btn-danger-outline { display: flex; align-items: center; gap: 6px; background: transparent; border: 1px solid var(--danger); color: var(--danger); padding: 7px 16px; border-radius: 6px; font-size: 0.85rem; font-weight: 600; cursor: pointer; transition: 0.2s; }
.btn-danger-outline:hover { background: rgba(225, 29, 72, 0.05); }
.btn-danger-outline svg { width: 16px; height: 16px; }

/* MODAL */
.modal-overlay { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(15, 23, 42, 0.4); backdrop-filter: blur(4px); display: flex; justify-content: center; align-items: center; z-index: 10000; opacity: 1; transition: opacity 0.3s; }
.modal-overlay.hidden { display: none; opacity: 0; }
.modal-content { background: var(--bg-card); border: 1px solid var(--border-color); padding: 24px; border-radius: 12px; width: 90%; max-width: 400px; box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1); }
.modal-content h3 { margin: 0 0 8px 0; color: var(--text-primary); }
.date-range-inputs { display: flex; flex-direction: column; gap: 15px; margin: 20px 0; }
.date-range-inputs div { display: flex; flex-direction: column; gap: 5px; }
.date-range-inputs label { font-size: 0.85rem; color: var(--text-muted); font-weight: 600; }
.date-range-inputs input { background: var(--bg-main); border: 1px solid var(--border-color); color: var(--text-primary); padding: 10px; border-radius: 6px; color-scheme: light; font-family: inherit; outline: none; }
.date-range-inputs input:focus { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2); }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 24px; }
.btn-ghost { background: transparent; border: 1px solid var(--border-color); color: var(--text-primary); padding: 8px 16px; border-radius: 6px; cursor: pointer; font-weight: 600; }
.btn-ghost:hover { background: var(--bg-hover); }
.btn-danger-fill { background: var(--danger); color: white; border: none; padding: 8px 16px; border-radius: 6px; cursor: pointer; font-weight: 600; }
.btn-danger-fill:hover { background: #be123c; }

.hidden { display: none !important; }

/* RESPONSIVO */
/* RESPONSIVO */
@media (max-width: 768px) {
    .top-nav { height: auto; flex-direction: column; padding: 16px; gap: 16px; }
    .nav-brand { width: 100%; justify-content: center; margin-bottom: 5px; }
    .kpi-nav-container { margin: 0; padding: 12px 0; border-left: none; border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); width: 100%; justify-content: center; gap: 30px; }
    .kpi-item { font-size: 0; } 
    .kpi-item b { font-size: 1.2rem; margin-left: 6px; }
    .nav-tools { width: 100%; justify-content: space-around; gap: 10px; }
    .token-display { display: none; } 
    .nav-links { width: 100%; justify-content: space-between; }
    .nav-link span { display: none; } 
    .nav-link svg { width: 24px; height: 24px; }
    .main-content { padding: 20px 15px; }
    .view-header h1 { font-size: 1.5rem; }
    .cards-grid { grid-template-columns: 1fr; }
    .device-list-grid { grid-template-columns: 1fr; }
    
    /* 🔥 SOLUCIÓN PARA LAS TARJETAS EN MÓVIL 🔥 */
    .device-row-card { flex-direction: column; align-items: stretch; gap: 0; }
    
    .device-main-info { 
        flex-direction: row; /* Forzamos a que se mantenga en línea */
        align-items: center; 
        padding: 16px 12px; /* Padding más ajustado para aprovechar espacio */
        gap: 8px;
    }
    
    .d-left { gap: 10px; flex: 1; min-width: 0; } /* Asegura que el texto se acorte si es muy largo */
    .d-icon { width: 38px; height: 38px; flex-shrink: 0; }
    .d-name { font-size: 0.95rem; } /* Texto ligeramente más pequeño */
    .d-status { font-size: 0.75rem; }
    
    .d-right { 
        width: auto; 
        justify-content: flex-end; 
        border-top: none; /* Quitamos la línea separadora */
        padding-top: 0; 
        margin-top: 0; 
        gap: 6px; /* Botones más juntos */
    }
    
    .round-btn { width: 36px; height: 36px; flex-shrink: 0; } /* Botones ajustados para celular */
    .round-btn svg { width: 18px; height: 18px; }

    .alert-container { bottom: 10px; right: 10px; left: 10px; }
    .floating-alert { min-width: 0; width: auto; }
    .history-filter-bar { flex-direction: column; align-items: stretch; }
    .quick-filters { justify-content: space-between; }
    .right-filters { justify-content: space-between; width: 100%; }
    .custom-date-filter { flex: 1; justify-content: center; }
}

/* ==========================================================================
   CAMPANA DE NOTIFICACIONES Y BADGE
   ========================================================================== */
.notification-bell {
    position: relative;
    cursor: pointer;
    display: flex;
    align-items: center;
    color: var(--text-muted);
    transition: color 0.2s ease;
    margin-right: 15px;
}
.notification-bell:hover { color: var(--text-primary); }
.badge-count {
    position: absolute;
    top: -5px;
    right: -6px;
    background-color: var(--danger);
    color: #ffffff;
    font-size: 0.65rem;
    font-weight: bold;
    padding: 2px 5px;
    border-radius: 10px;
    border: 2px solid var(--bg-nav);
    min-width: 18px;
    text-align: center;
}

/* ==========================================================================
   ANIMACIÓN DEL LOGO (ESTADO DE CONEXIÓN)
   ========================================================================== */
@keyframes pulseCloud {
    0% { filter: drop-shadow(0 0 2px rgba(37, 99, 235, 0.2)); transform: scale(1); }
    50% { filter: drop-shadow(0 0 10px rgba(37, 99, 235, 0.8)); transform: scale(1.08); }
    100% { filter: drop-shadow(0 0 2px rgba(37, 99, 235, 0.2)); transform: scale(1); }
}

.cloud-online {
    color: var(--accent);
    animation: pulseCloud 2s infinite ease-in-out;
}

.cloud-offline {
    color: var(--text-muted);
    animation: none;
    transition: color 0.3s ease;
}