:root { 
    /* Paleta Minimalista Ultra-Moderna (OLED Dark Mode) */
    --bg-base: #000000;
    --bg-surface: #111111;
    --bg-surface-elevated: #1a1a1a;
    --border-subtle: #262626;
    --border-focus: #404040;
    
    /* Tipografía */
    --text-primary: #f5f5f5;
    --text-secondary: #a3a3a3;
    --text-tertiary: #737373;
    
    /* Acentos */
    --accent-blue: #3b82f6;
    --accent-blue-dim: rgba(59, 130, 246, 0.15);
    --accent-orange: #f97316;
    --accent-orange-dim: rgba(249, 115, 22, 0.15);
    --accent-purple: #a855f7;
    
    /* Semáforo & Estado */
    --success: #10b981;
    --warning: #eab308;
    --danger: #ef4444;
    
    color-scheme: dark;
}

/* =========================================================
   BASE Y RESET
========================================================= */
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body {
    margin: 0; padding: 0;
    background-color: var(--bg-base);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, Helvetica, sans-serif;
    -webkit-font-smoothing: antialiased;
}
.hidden { display: none !important; }

/* =========================================================
   ESTRUCTURA PRINCIPAL (App Layout)
========================================================= */
.app-layout {
    max-width: 600px; /* Ancho optimizado estilo móvil/tablet */
    margin: 0 auto;
    min-height: 100vh;
    background: var(--bg-base);
    position: relative;
    padding-bottom: 90px; /* deja espacio para la barra de navegación inferior fija */
}
.view-container { animation: fadeIn 0.3s ease-out; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* =========================================================
   HEADER (Sticky Glassmorphism)
========================================================= */
.app-header {
    position: sticky; top: 0; z-index: 50;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-subtle);
    padding: 16px 24px;
    display: flex; justify-content: space-between; align-items: center;
}
.app-header h2 { margin: 0; font-size: 22px; font-weight: 700; letter-spacing: -0.5px; }
.header-subtitle { font-size: 13px; color: var(--text-secondary); font-weight: 500; }

.btn-icon-text {
    background: var(--bg-surface-elevated); border: 1px solid var(--border-subtle);
    color: var(--text-primary); padding: 8px 14px; border-radius: 20px;
    font-size: 13px; font-weight: 600; display: flex; align-items: center; gap: 6px; cursor: pointer;
}
.btn-icon-text.outline { background: transparent; }

/* =========================================================
   CONTROLES SEGMENTADOS (Tabs estilo iOS)
========================================================= */
.main-content { padding: 24px; }
.segmented-control {
    display: flex; background: var(--bg-surface); padding: 4px; border-radius: 12px; margin-bottom: 32px;
    border: 1px solid var(--border-subtle);
}
.segment {
    flex: 1; text-align: center; padding: 10px; font-size: 14px; font-weight: 600;
    color: var(--text-tertiary); border-radius: 8px; cursor: pointer; transition: 0.25s ease;
}
.segment.active-mecanica { background: var(--border-subtle); color: var(--text-primary); box-shadow: 0 2px 8px rgba(0,0,0,0.2); }
.segment.active-combustible { background: var(--accent-orange-dim); color: var(--accent-orange); }

/* =========================================================
   FORMULARIOS Y SECCIONES
========================================================= */
.form-section {
    margin-bottom: 32px; padding-bottom: 24px; border-bottom: 1px solid var(--border-subtle);
}
.form-section:last-of-type { border-bottom: none; }
.section-title { font-size: 12px; text-transform: uppercase; letter-spacing: 1px; color: var(--text-secondary); margin: 0 0 20px 0; font-weight: 700; }

.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 13px; color: var(--text-secondary); font-weight: 500; margin-bottom: 8px; }

input, select {
    width: 100%; padding: 16px;
    background: var(--bg-surface); border: 1px solid transparent;
    border-radius: 12px; color: var(--text-primary); font-size: 16px;
    transition: 0.2s; outline: none;
}
input:focus, select:focus { background: var(--bg-surface-elevated); border-color: var(--border-focus); }
input::placeholder { color: var(--text-tertiary); }
input[type="date"]::-webkit-calendar-picker-indicator { filter: invert(1); opacity: 0.5; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* Costos y Prefijos */
.input-prefix { position: relative; display: flex; align-items: center; }
.input-prefix span { position: absolute; left: 16px; color: var(--text-tertiary); font-weight: 600; }
.input-prefix input { padding-left: 36px; }

/* Sub-textos y Helpers */
.text-km { display: block; font-size: 12px; color: var(--accent-blue); margin-top: 6px; font-weight: 600; }
.helper-text { font-size: 12px; color: var(--text-tertiary); margin-top: 12px; }

/* =========================================================
   MULTIMEDIA UPLOADER (Grid visual)
========================================================= */
.media-grid { gap: 12px; }
.media-upload {
    position: relative; background: var(--bg-surface); border: 1px dashed var(--border-focus);
    border-radius: 12px; padding: 24px 10px; text-align: center; display: flex; flex-direction: column; align-items: center; gap: 8px;
    color: var(--text-secondary); overflow: hidden;
}
.media-upload input[type="file"] { position: absolute; top: 0; left: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; }
.media-upload:hover { border-color: var(--text-secondary); color: var(--text-primary); background: var(--bg-surface-elevated); }

/* =========================================================
   BOTONES Y ACCIONES
========================================================= */
.sticky-action { position: fixed; bottom: 100px; left: 24px; right: 24px; max-width: 552px; margin: 0 auto; z-index: 40; }

.btn-primary {
    width: 100%; padding: 18px; border: none; border-radius: 16px;
    background: var(--text-primary); color: var(--bg-base); font-size: 16px; font-weight: 700;
    cursor: pointer; transition: transform 0.1s, opacity 0.2s;
    box-shadow: 0 8px 24px rgba(255,255,255,0.1);
}
.btn-primary:active { transform: scale(0.98); }
.btn-primary.btn-gas { background: var(--accent-orange); color: white; }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-ghost {
    background: transparent; border: 1px solid var(--border-subtle); color: var(--text-secondary);
    padding: 12px; border-radius: 10px; font-size: 14px; font-weight: 600; cursor: pointer; text-align: center;
}
.btn-ghost:hover { background: var(--bg-surface); color: var(--text-primary); }
.btn-add-vehiculo { width: 100%; margin-top: 12px; border-style: dashed; }
.btn-add-trabajo { width: 100%; margin-top: 8px; border-style: dashed; }
.w-full { width: 100%; }

/* Botones inyectados por JS (Historial) */
.btn-accion { background: var(--bg-surface-elevated); border: none; padding: 10px; border-radius: 8px; font-size: 14px; margin: 2px; cursor: pointer; }
#contenedorTrabajos button { background: rgba(239, 68, 68, 0.1) !important; color: var(--danger) !important; border: none !important; border-radius: 8px !important; padding: 0 16px; font-weight: bold;}

/* =========================================================
   DASHBOARD Y FINANZAS
========================================================= */
.dash-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.dash-header h3 { font-size: 16px; margin: 0; }
.btn-pdf { background: var(--border-subtle); color: var(--text-primary); border: none; padding: 6px 12px; border-radius: 8px; font-size: 12px; font-weight: 600; cursor: pointer;}

.dash-finanzas { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.metric-card { background: var(--bg-surface); padding: 16px; border-radius: 16px; display: flex; flex-direction: column; gap: 4px; border: 1px solid var(--border-subtle); }
.metric-label { font-size: 11px; color: var(--text-tertiary); text-transform: uppercase; font-weight: 700; letter-spacing: 0.5px; }
.metric-value { font-size: 18px; font-weight: 800; }
.metric-sub { font-size: 10px; color: var(--text-tertiary); border-top: 1px solid var(--border-subtle); margin-top: 8px; padding-top: 8px; }

.txt-primary { color: var(--text-primary); }
.txt-warning { color: var(--warning); }
.txt-success { color: var(--success); }

/* =========================================================
   TABLA MODERNA (Mobile friendly style)
========================================================= */
.table-section { margin-top: 40px; }
.modern-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.modern-table th { text-align: left; padding: 0 0 16px 0; color: var(--text-tertiary); font-weight: 600; border-bottom: 1px solid var(--border-subtle); }
.modern-table td { padding: 16px 0; border-bottom: 1px solid var(--border-subtle); vertical-align: top; }
.modern-table tr:last-child td { border-bottom: none; }

.tag-categoria { display: inline-block; background: var(--border-subtle); padding: 4px 8px; border-radius: 6px; font-size: 10px; font-weight: 700; text-transform: uppercase; margin-bottom: 4px; }
.tag-gas { background: var(--accent-orange-dim); color: var(--accent-orange); }

.fila-historial { cursor: pointer; }
.fila-historial:active { background: var(--bg-surface); }
.fila-historial-detalle td { padding-top: 0; }
.detalle-fila-extra { display: flex; flex-direction: column; gap: 6px; font-size: 13px; padding: 12px; margin-top: -8px; background: var(--bg-surface-elevated); border-radius: 10px; }
.detalle-fila-extra span { color: var(--text-secondary); margin-right: 4px; }
.detalle-fila-extra b { color: var(--text-primary); }

/* =========================================================
   PANTALLA DE BLOQUEO Y EDICIÓN
========================================================= */
.overlay-bloqueo { position:fixed; inset: 0; background: var(--bg-base); z-index:9999; display:flex; align-items:center; justify-content:center; }
.lock-container { text-align: center; width: 100%; max-width: 300px; }
.lock-icon { font-size: 40px; margin-bottom: 16px; opacity: 0.8; }
.lock-container h2 { margin: 0 0 8px 0; font-size: 24px; }
.lock-container .subtitle { color: var(--text-secondary); margin-bottom: 32px; font-size: 14px; }
.input-pin { text-align: center; font-size: 32px; letter-spacing: 16px; padding: 16px; background: transparent; border-bottom: 2px solid var(--border-focus); border-radius: 0; margin-bottom: 32px; }
.input-pin:focus { border-bottom-color: var(--text-primary); background: transparent; }
.error-pin { color: var(--danger); font-size: 13px; font-weight: 600; margin-top: 16px; }

.panel-edicion { background: var(--accent-blue-dim); border: 1px solid rgba(59, 130, 246, 0.3); padding: 12px 16px; border-radius: 12px; margin-bottom: 24px; display: flex; justify-content: space-between; align-items: center; }
.edicion-info { color: var(--accent-blue); font-weight: 600; font-size: 13px; display: flex; align-items: center; gap: 8px;}
.dot-pulse { width: 8px; height: 8px; background: var(--accent-blue); border-radius: 50%; animation: pulse 1.5s infinite; }
.btn-cancelar { background: transparent; color: var(--text-primary); border: 1px solid var(--border-focus); padding: 6px 12px; border-radius: 8px; font-size: 12px; font-weight: 600; cursor: pointer; }

/* =========================================================
   MODALES (Glass UI)
========================================================= */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.6); backdrop-filter: blur(8px); z-index: 100; display: flex; align-items: flex-end; justify-content: center; padding: 16px;}
.modal-content { background: var(--bg-surface); width: 100%; max-width: 500px; padding: 32px 24px; border-radius: 24px; border: 1px solid var(--border-subtle); animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1); }
@keyframes slideUp { from { transform: translateY(100%); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
.modal-content h3 { margin: 0; font-size: 20px; }
.modal-content .subtitle { color: var(--text-secondary); font-size: 14px; margin: 4px 0 24px 0; }
.modal-actions { display: flex; gap: 12px; margin-top: 32px; }
.mt-16 { margin-top: 16px; }

/* =========================================================
   ASISTENTE IA GEMINI
========================================================= */
.fab-gemini { position: fixed; bottom: 180px; right: 24px; background: var(--text-primary); color: var(--bg-base); width: 56px; height: 56px; border-radius: 28px; display: flex; align-items: center; justify-content: center; cursor: pointer; z-index: 90; box-shadow: 0 8px 32px rgba(255,255,255,0.15); transition: 0.25s; }
.fab-gemini:active { transform: scale(0.9); }

.modal-gemini { padding: 0; height: 85vh; display: flex; flex-direction: column; overflow: hidden; }
.gemini-header { padding: 20px 24px; border-bottom: 1px solid var(--border-subtle); display: flex; justify-content: space-between; align-items: center; }
.fila-enfoque-gemini { padding: 12px 24px 0; }
.chip-enfoque-gemini { background: var(--accent-blue-dim); border: 1px solid rgba(59, 130, 246, 0.3); color: var(--accent-blue); padding: 8px 14px; border-radius: 18px; font-size: 12px; font-weight: 600; cursor: pointer; font-family: inherit; }
.fila-enfoque-gemini .chips-container { margin-top: 10px; }
.gemini-title { display: flex; align-items: center; gap: 8px; font-weight: 700; color: var(--text-primary); }
.chat-body { flex: 1; overflow-y: auto; padding: 24px; display: flex; flex-direction: column; gap: 16px; background: var(--bg-base); }
.burbuja-ia { background: var(--bg-surface-elevated); padding: 16px; border-radius: 4px 16px 16px 16px; max-width: 85%; font-size: 14px; line-height: 1.5; align-self: flex-start; color: var(--text-secondary); border: 1px solid var(--border-subtle); }
.burbuja-user { background: var(--text-primary); color: var(--bg-base); padding: 16px; border-radius: 16px 4px 16px 16px; max-width: 85%; font-size: 14px; align-self: flex-end; font-weight: 500;}
.gemini-input-area { padding: 16px 24px; background: var(--bg-surface); border-top: 1px solid var(--border-subtle); display: flex; gap: 12px; align-items: center; padding-bottom: max(16px, env(safe-area-inset-bottom)); }
.gemini-input-area input { flex: 1; padding: 16px 20px; border-radius: 24px; background: var(--bg-base); font-size: 15px; margin: 0; }
.btn-mic { background: transparent; border: none; font-size: 24px; cursor: pointer; padding: 8px; border-radius: 50%; }
.btn-send-ia { background: var(--text-primary); color: var(--bg-base); border: none; width: 44px; height: 44px; border-radius: 22px; display: flex; align-items: center; justify-content: center; cursor: pointer; }

/* =========================================================
   FORZADO ESTILOS DEL SEMÁFORO (INYECTADOS POR JS)
========================================================= */
#panelSemaforoContainer { margin-top: 32px; }
#panelSemaforoContainer .card { background: var(--bg-surface) !important; border: 1px solid var(--border-subtle) !important; border-radius: 20px !important; margin-bottom: 24px;}
#panelSemaforoContainer .card > div:first-child { background: transparent !important; border-bottom: 1px solid var(--border-subtle) !important; }
#panelSemaforoContainer .grid-2 { background: transparent !important; }
#panelSemaforoContainer h4 { color: var(--text-primary) !important; }
#panelSemaforoContainer button { background: var(--border-subtle) !important; color: var(--text-primary) !important; border: none !important; font-weight: 600 !important; }

@keyframes pulse { 0% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.1); opacity: 0.7; } 100% { transform: scale(1); opacity: 1; } }
@media print { .btn-accion, .ocultar-print, #panelEdicion, #tabsModo, #btnGeminiFAB, #pantallaBloqueo, .sticky-action { display: none !important; } }
.chips-container { display: flex; flex-wrap: wrap; gap: 8px; padding-bottom: 8px; }
.chips-container::-webkit-scrollbar { display: none; }
.chip-vehiculo { background: var(--bg-surface); border: 1px solid var(--border-subtle); color: var(--text-primary); padding: 8px 14px; border-radius: 18px; font-size: 13px; font-weight: 600; cursor: pointer; white-space: nowrap; transition: 0.2s; }
.chip-vehiculo.activo { background: var(--text-primary); color: var(--bg-base); border-color: var(--text-primary); }
/* Corrección de botones cortados */
.chips-container { padding-right: 24px; margin-right: -24px; }

/* Barra de Navegación Inferior */
.bottom-nav { position: fixed; bottom: 0; left: 0; right: 0; background: var(--bg-surface-elevated); border-top: 1px solid var(--border-subtle); display: flex; justify-content: space-around; padding: 12px 16px 24px; z-index: 100; }
.nav-item { background: none; border: none; color: var(--text-tertiary); font-size: 12px; display: flex; flex-direction: column; align-items: center; gap: 4px; cursor: pointer; font-weight: 600; }
.nav-item.activo { color: var(--text-primary); }
.nav-item span { font-size: 20px; }


/* Semáforos Acordeón */
.semaforo-header { cursor: pointer; display: flex; justify-content: space-between; align-items: center; }
.semaforo-contenido { display: none; padding-top: 15px; border-top: 1px solid var(--border-subtle); margin-top: 15px; }
.semaforo-contenido.abierto { display: grid; }
/* Grid y Tarjetas de la Flota */
#vistaFlota .main-content { padding-bottom: 110px; }
.grid-flota { display: flex; flex-direction: column; gap: 10px; margin-top: 16px; }
.card-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; font-size: 12px; background: var(--bg-surface-elevated); padding: 10px 14px; border-radius: 10px; margin-bottom: 14px; }
.card-specs span { color: var(--text-secondary); }
.card-specs b { color: var(--text-primary); }
.btn-card-action { flex: 1; padding: 10px; font-size: 12px; font-weight: 600; border-radius: 8px; border: 1px solid var(--border-subtle); background: var(--bg-surface-elevated); color: var(--text-primary); cursor: pointer; text-align: center; }

/* =========================================================
   FLOTA MINIMALISTA: resumen + filas compactas + ficha detalle
========================================================= */
.resumen-flota-card {
    width: 100%; display: flex; justify-content: space-between; align-items: center;
    background: var(--bg-surface); border: 1px solid var(--border-subtle); border-radius: 16px;
    padding: 16px 18px; cursor: pointer; text-align: left; font-family: inherit;
}
.resumen-flota-card > div { display: flex; flex-direction: column; gap: 4px; }
.resumen-flota-label { font-size: 11px; color: var(--text-tertiary); text-transform: uppercase; font-weight: 700; letter-spacing: 0.5px; }
.resumen-flota-valor { font-size: 20px; font-weight: 800; color: var(--text-primary); }
.resumen-flota-alertas { font-size: 12px; font-weight: 700; color: var(--warning); }

.card-vehiculo-compact {
    display: flex; align-items: center; gap: 14px; width: 100%;
    background: var(--bg-surface); border: 1px solid var(--border-subtle); border-radius: 14px;
    padding: 12px 14px; cursor: pointer; text-align: left; font-family: inherit;
}
.compact-foto { width: 48px; height: 48px; border-radius: 10px; object-fit: cover; background: var(--bg-surface-elevated); flex-shrink: 0; }
.compact-info { flex: 1; min-width: 0; }
.compact-alias { font-size: 15px; font-weight: 700; color: var(--text-primary); display: block; }
.compact-sub { font-size: 12px; color: var(--text-secondary); display: block; margin-top: 2px; }
.compact-alerta { font-size: 11px; font-weight: 700; color: var(--danger); flex-shrink: 0; }
.compact-chevron { color: var(--text-tertiary); flex-shrink: 0; }

.sheet-detalle { max-height: 90vh; overflow-y: auto; }
.sheet-header { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border-subtle); padding-bottom: 12px; margin-bottom: 16px; }
.sheet-header h3 { font-size: 18px; }
.detalle-foto { width: 100%; height: 180px; object-fit: cover; border-radius: 12px; border: 1px solid var(--border-subtle); margin-bottom: 16px; background: var(--bg-surface-elevated); display: block; }
.detalle-specs { grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 8px; }
.detalle-specs .spec-full { grid-column: span 2; }
.detalle-vin { font-size: 11px; color: var(--text-tertiary); margin-bottom: 20px; }
.detalle-acciones { display: flex; gap: 8px; margin-bottom: 24px; }
.detalle-seccion { margin-bottom: 24px; }
.detalle-seccion-header { width: 100%; display: flex; justify-content: space-between; align-items: center; background: transparent; border: none; padding: 0; cursor: pointer; font-family: inherit; }
.detalle-seccion-header .section-title { margin: 0; }
.detalle-seccion-chevron { color: var(--text-tertiary); font-size: 16px; transition: transform 0.2s; }
.detalle-seccion-chevron.abierto { transform: rotate(180deg); }
.detalle-manual { font-size: 13px; color: var(--text-secondary); }
.detalle-manual a { color: var(--accent-blue); font-weight: 600; text-decoration: none; }
.galeria-fotos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 12px; }
.galeria-fotos a { display: block; aspect-ratio: 1; border-radius: 10px; overflow: hidden; background: var(--bg-surface-elevated); border: 1px solid var(--border-subtle); }
.galeria-fotos img { width: 100%; height: 100%; object-fit: cover; display: block; }
.galeria-vacia { font-size: 13px; color: var(--text-tertiary); margin-top: 12px; }

.lightbox-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.92); z-index: 200; display: flex; align-items: center; justify-content: center; padding: 24px; }
.lightbox-overlay img { max-width: 100%; max-height: 100%; border-radius: 8px; object-fit: contain; }
.lightbox-cerrar { position: fixed; top: 16px; right: 16px; background: var(--bg-surface-elevated); border: 1px solid var(--border-subtle); color: var(--text-primary); width: 40px; height: 40px; border-radius: 20px; font-size: 18px; cursor: pointer; z-index: 201; }

.modal-manual { height: 90vh; display: flex; flex-direction: column; padding: 16px; }
.modal-manual .sheet-header { flex-shrink: 0; }
.iframe-manual { flex: 1; width: 100%; border: none; border-radius: 12px; background: var(--bg-surface-elevated); }
.buscador-historial { margin: 12px 0 4px 0; font-size: 14px; padding: 12px 16px; }