/* --- Variables de Color (Theming) --- */
/* --- Variables de Color (Modern Slate Palette) --- */
:root {
    /* Modo Claro */
    --bg-body: #f1f5f9;       /* Slate 100 */
    --bg-card: #ffffff;
    --bg-card-alt: #f8fafc;   /* Slate 50 */
    --bg-header: linear-gradient(135deg, #1e3a8a, #1d4ed8); /* Azul Intenso */
    
    /* Textos */
    --text-primary: #1e293b;  /* Slate 800 */
    --text-secondary: #64748b;/* Slate 500 */
    --text-muted: #94a3b8;    /* Slate 400 */
    
    /* UI Elements */
    --border-color: #cbd5e0; /* Slate 300 */
    --input-bg: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    
    /* Colores Semánticos */
    --primary: #2563eb;       /* Blue 600 */
    --accent: #2563eb;        /* Blue 600 */
    --danger: #ef4444;        /* Red 500 */
    --success: #10b981;       /* Emerald 500 */
    --warning: #f59e0b;       /* Amber 500 */
    --purple: #8b5cf6;        /* Violet 500 */
    
    /* Fondos de estado (Para filas de tablas) */
    --bg-highlight: #eff6ff;  /* Blue 50 */
    --bg-success-light: #ecfdf5;
    --bg-danger-light: #fef2f2;
    --bg-warning-light: #fffbeb;

    /* Scrollbar */
    --scroll-track: #e2e8f0;
    --scroll-thumb: #94a3b8;
    --scroll-thumb-hover: #64748b;
}

[data-theme="dark"] {
    /* Modo Oscuro Profundo (Deep Blue/Grey) */
    --bg-body: #0f172a;       /* Slate 900 */
    --bg-card: #1e293b;       /* Slate 800 */
    --bg-card-alt: #111827;   /* Gray 900 (Contraste) */
    --bg-header: #1e293b;     /* Header plano en dark mode */
    
    /* Textos */
    --text-primary: #f1f5f9;  /* Slate 100 */
    --text-secondary: #cbd5e1;/* Slate 300 */
    --text-muted: #64748b;    /* Slate 500 */
    
    /* UI Elements */
    --border-color: #334155;  /* Slate 700 */
    --input-bg: #0f172a;      /* Fondo inputs oscuro */
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    
    /* Colores Semánticos (Ajustados para brillo en oscuro) */
    --primary: #3b82f6;       /* Blue 500 */
    --accent: #3b82f6;        /* Blue 500 */
    --danger: #f87171;        /* Red 400 */
    --success: #34d399;       /* Emerald 400 */
    --warning: #fbbf24;       /* Amber 400 */
    --purple: #a78bfa;        /* Violet 400 */

    /* Fondos de estado (Para filas de tablas - Transparencias) */
    --bg-highlight: rgba(59, 130, 246, 0.15);
    --bg-success-light: rgba(16, 185, 129, 0.15);
    --bg-danger-light: rgba(239, 68, 68, 0.15);
    --bg-warning-light: rgba(245, 158, 11, 0.15);

    /* Scrollbar */
    --scroll-track: #0f172a;
    --scroll-thumb: #475569;
    --scroll-thumb-hover: #64748b;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
    background-color: var(--bg-body);
    color: var(--text-primary);
    padding-bottom: 80px;
    transition: background-color 0.3s, color 0.3s;
    font-size: 13px;
    -webkit-tap-highlight-color: transparent;
    line-height: 1.4;
}

/* --- Header --- */
.app-header {
    background: var(--bg-header);
    /* Cambiamos sticky por fixed para que flote sobre todo el contenido */
    position: fixed; 
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 0.5rem 1rem; /* Reducimos un poco el padding vertical */
    box-shadow: 0 2px 10px rgba(0,0,0,0.15);
    /* Transición suave para el efecto de ocultar/mostrar */
    transition: transform 0.3s ease-in-out, background-color 0.3s;
}

/* Clase para ocultar el header al hacer scroll hacia abajo */
.app-header.header-hidden {
    transform: translateY(-100%);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: nowrap; 
    gap: 10px;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0; 
}

.logo-area h1 {
    font-size: 1.2rem;
    margin: 0;
    white-space: nowrap;
    color: #ffffff !important; /* CORRECCIÓN: Fuerza texto blanco siempre */
    text-shadow: 0 1px 2px rgba(0,0,0,0.2); /* Mejora legibilidad */
}

.logo-img {
    width: 30px;
    height: 30px;
}

.header-actions {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: nowrap; 
    overflow-x: auto;
    scrollbar-width: none; /* Ocultar scrollbar en Firefox */
}
.header-actions::-webkit-scrollbar { display: none; }

/* Pantallas Pequeñas (Móviles y Tablets verticales) */
@media (max-width: 768px) {
    /* Ajuste para evitar que el contenido quede debajo del header fijo */
    body {
        padding-top: 70px; 
    }

    /* Truco para ocultar texto pero dejar el icono visible */
    .header-actions .btn {
        font-size: 0 !important; /* Oculta el texto */
        padding: 0 !important;   /* Resetea padding */
        width: 38px;             /* Ancho fijo cuadrado/redondo */
        height: 38px;
        min-height: 38px;
        border-radius: 50%;      /* Los hace circulares */
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 0 !important;
    }

    /* Restaurar el tamaño del icono dentro del botón */
    .header-actions .btn i {
        font-size: 1.1rem !important;
        margin: 0 !important;
    }
    
    /* El botón de instalar también solo icono */
    #install-btn {
        font-size: 0 !important; /* Oculta el texto */
        padding: 0 !important;   /* Resetea padding */
        width: 38px;             /* Ancho fijo cuadrado/redondo */
        height: 38px;
        min-height: 38px;
        border-radius: 50%;      /* Los hace circulares */
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 0 !important;
    }
    #install-btn i {
        font-size: 1.1rem !important;
        margin: 0 !important;
    }

    /* Ajustar logo y título en móviles */
    .logo-area h1 {
        font-size: 1rem;
        display: block; /* Mantiene el título */
    }
    
    .logo-img {
        width: 24px;
        height: 24px;
    }
    
    /* Ocultar input file que podría romper el layout */
    .header-actions input[type="file"] {
        display: none;
    }
}

/* Pantallas Grandes (Escritorio) */
@media (min-width: 769px) {
    body {
        padding-top: 80px; /* Espacio para el header en escritorio */
    }
    
    .header-actions .btn i {
        margin-right: 5px; /* Espacio entre icono y texto */
    }
}

/* --- Botones (combinados) --- */
.btn {
    padding: 4px 12px; /* Padding mínimo horizontal y vertical */
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    color: white;
    font-weight: 600;
    min-height: 32px; /* Altura estandarizada reducida */
    margin-bottom: 0;
    white-space: nowrap; /* Mantiene el ancho adaptable al contenido */
    transition: all 0.2s ease;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    border: 1px solid rgba(255,255,255,0.1);
}

.btn:hover { transform: translateY(-1px); box-shadow: 0 3px 6px rgba(0,0,0,0.15); }
.btn:active { transform: translateY(0); box-shadow: 0 1px 2px rgba(0,0,0,0.1); }

.btn-sm { 
    padding: 3px 8px; /* Padding mínimo para botones pequeños */
    font-size: 0.75rem; 
    min-height: 28px; /* Altura estandarizada reducida */
}

/* Tipos de Botones */
.btn-primary { 
    background-color: var(--primary); 
    box-shadow: 0 4px 6px rgba(37, 99, 235, 0.2);
}
.btn-primary:hover { background-color: #1d4ed8; }
[data-theme="dark"] .btn-primary:hover { background-color: #60a5fa; }
.btn-success { 
    background-color: var(--success); 
    box-shadow: 0 4px 6px rgba(16, 185, 129, 0.2);
}
.btn-danger { background: var(--danger); }
.btn-warning { background: var(--warning); color: #1a202c; }
.btn-secondary { background: #718096; }
.btn-purple { background: var(--purple); }
.btn-info { background: #4299e1; }

/* Header actions unificadas */
/* 1. Estado Base: Transparente y limpio */
.header-actions .btn {
    background: transparent !important;
    border: 1px solid transparent !important;
    box-shadow: none !important;
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    transition: all 0.2s ease;
    min-height: 38px;
    padding: 5px 10px;
}

/* 2. Estado Hover: Reacción suave al pasar el mouse */
.header-actions .btn:hover {
    background: rgba(255, 255, 255, 0.15) !important;
    color: #ffffff !important;
    transform: translateY(-1px);
}

.icon-btn {
    background: none;
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 5px;
    border-radius: 50%;
    transition: background 0.2s;
}

.icon-btn:hover { background-color: rgba(255,255,255,0.1); }

.install-btn {
    background-color: var(--bg-card); /* Se adapta al tema (blanco u oscuro) */
    color: var(--primary);            /* Texto azul adaptable */
    border: 1px solid var(--border-color); /* Borde sutil */
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    transition: transform 0.2s, background-color 0.3s;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.install-btn i {
    color: var(--primary); /* El icono sigue al color del texto */
}

/* Hover específico para dar feedback */
.install-btn:hover {
    background-color: var(--bg-card-alt);
}

.install-btn:active { transform: scale(0.95); }
.hidden { display: none !important; }

/* --- Contenedor principal --- */
.container {
    padding: 5px;
    max-width: 1200px;
    margin: 0 auto;
    box-sizing: border-box;
    overflow-x: hidden;
}

[data-theme="dark"] .tab {
    background: #2d3748;
    color: #cbd5e0;
    border-color: #4a5568;
}

.tab:hover { background: #cbd5e0; }
[data-theme="dark"] .tab:hover { background: #4a5568; color: white; }

.tab.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
    box-shadow: 0 -2px 5px rgba(49, 130, 206, 0.2);
}

/* --- Paneles --- */
.panel {
    display: none;
    background: var(--bg-card);
    padding: 10px;
    border-radius: 8px 8px 8px 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    min-height: 200px;

    animation: fadeIn 0.25s ease-out;
    margin-top: 0;
    border: 1px solid var(--border-color);
}

.panel.active { display: block; }

/* --- Tablas generales --- */
.table-container {
    min-height: 250px;
    height: auto;
    width: 100%;
    overflow-x: auto;
    margin-bottom: 18px;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    -webkit-overflow-scrolling: touch;
    background: #fff;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

[data-theme="dark"] .table-container {
    background: #2d3748;
    border-color: #4a5568;
}

table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

th, td {
    border: 1px solid #e2e8f0;
    padding: 4px 4px;
    text-align: left;
    vertical-align: middle;
}

[data-theme="dark"] th, [data-theme="dark"] td {
    border-color: #4a5568;
}

th {
    background-color: var(--primary);
    color: white;
    text-align: center;
    text-transform: uppercase;
    font-size: 0.75rem;
    white-space: nowrap;
    cursor: pointer;
    user-select: none;
    font-weight: 600;
    letter-spacing: 0.5px;
    position: sticky;
    top: 0;
}

tr:nth-child(even) { background-color: #f8fafc; }
[data-theme="dark"] tr:nth-child(even) { background-color: #2d3748; }

tr:hover { background-color: #f1f5f9; }
[data-theme="dark"] tr:hover { background-color: #3a4a5a; }

/* --- Inputs --- */
input[type="number"], input[type="text"], select, textarea {
    width: 100%;
    padding: 7px 10px;
    box-sizing: border-box;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: inherit;
    font-size: 13px;
    transition: border 0.2s;
    background-color: var(--input-bg);
    color: var(--text-primary);
}

.table-container input[type="number"], 
.table-container input[type="text"], 
.table-container select {
    padding: 2px 4px; 
    height: 26px; /* Altura fija mínima */
}

textarea.table-input, textarea.db-desc-input {
    resize: vertical;
    min-height: 28px; 
    height: 28px;
    overflow: hidden;
    line-height: 1.2;
    padding: 4px 6px; 
}

textarea.table-input:focus, textarea.db-desc-input:focus {
    min-height: 70px;
    overflow: auto;
    position: relative;
    z-index: 10;
}

input:focus, textarea:focus, select:focus {
    border-color: var(--accent);
    outline: none;
    background-color: var(--bg-card-alt); /* Corregido para dark mode */
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2); /* Sombra azul variable */
}

[data-theme="dark"] input:focus, [data-theme="dark"] textarea:focus, [data-theme="dark"] select:focus {
    background-color: #2d3748;
}

input[readonly] {
    background-color: #f1f5f9;
    color: #4a5568;
    border: 1px solid #cbd5e0;
    text-align: center;
    cursor: default;
}

[data-theme="dark"] input[readonly] {
    background-color: #2d3748;
    color: #a0aec0;
    border-color: #4a5568;
}

/* --- Módulo bar --- */
.module-bar {
    display: flex;
    align-items: center;
    background: #e2e8f0;
    padding: 0;
    border-top: 1px solid #cbd5e0;
    overflow-x: auto;
    width: 100%;
    scrollbar-width: thin;
}

[data-theme="dark"] .module-bar {
    background: #2d3748;
    border-color: #4a5568;
}

.module-tabs-container {
    display: flex;
    flex-grow: 1;
    overflow-x: auto;
    padding-left: 5px;
}

.module-tab {
    padding: 8px 15px;
    margin-right: 2px;
    background: #cbd5e0;
    border-right: 1px solid #a0aec0;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    color: #4a5568;
    white-space: nowrap;
    position: relative;
    transition: background 0.2s;
    user-select: none;
    border-radius: 5px 5px 0 0;
    margin-top: 2px;
}

[data-theme="dark"] .module-tab {
    background: #4a5568;
    border-right-color: #2d3748;
    color: #e2e8f0;
}

.module-tab:hover { background: #edf2f7; }
[data-theme="dark"] .module-tab:hover { background: #5a6a7a; color: white; }

.module-tab.active {
    background: #fff;
    color: var(--primary);
    border-top: 3px solid var(--primary);
    padding-top: 5px;
    box-shadow: 0 -2px 5px rgba(0,0,0,0.05);
    z-index: 10;
}

[data-theme="dark"] .module-tab.active {
    background: var(--bg-card);
    color: var(--accent);
}

.module-controls {
    display: flex;
    background: #e2e8f0;
    padding: 5px;
    position: sticky;
    right: 0;
    box-shadow: -5px 0 10px rgba(0,0,0,0.1);
}

[data-theme="dark"] .module-controls {
    background: #2d3748;
}

.module-btn {
    width: 28px;
    height: 28px;
    border: none;
    background: transparent;
    color: #4a5568;
    cursor: pointer;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}

[data-theme="dark"] .module-btn { color: #cbd5e0; }

.module-btn:hover { background: #cbd5e0; color: #1a202c; }
[data-theme="dark"] .module-btn:hover { background: #4a5568; color: white; }

/* --- Paginación --- */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin: 15px 0;
    padding: 10px;
    background: #f8fafc;
    border-radius: 6px;
    border: 1px solid #e2e8f0;
}

[data-theme="dark"] .pagination {
    background: #2d3748;
    border-color: #4a5568;
}

/* --- APU Editor --- */
.apu-header-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
    background: #f1f5f9;
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
    border: 1px solid #e2e8f0;
}

[data-theme="dark"] .apu-header-grid {
    background: #2d3748;
    border-color: #4a5568;
}

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

.resource-group {
    margin-bottom: 25px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    overflow: hidden;
    max-width: 100%;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

[data-theme="dark"] .resource-group {
    border-color: #4a5568;
}

.group-header {
    background: #edf2f7;
    padding: 5px 5px;
    font-weight: 700;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--primary);
    font-size: 0.95rem;
    border-bottom: 1px solid #e2e8f0;
}

[data-theme="dark"] .group-header {
    background: #2d3748;
    border-color: #4a5568;
}

.totals-card {
    background: var(--light);
    padding: 18px;
    border-radius: 8px;
    border: 1px solid #cbd5e0;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.total-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px dashed #cbd5e0;
    font-size: 0.9rem;
}

.total-final {
    background: linear-gradient(to right, var(--primary), #2c5282);
    color: white;
    padding: 15px;
    font-size: 1.3rem;
    font-weight: 700;
    display: flex;
    justify-content: space-between;
    margin-top: 15px;
    border-radius: 6px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

/* --- Tablas DB --- */
.db-table { min-width: 100%; }

.db-table th.col-code, .db-table td.col-code { width: 50px; min-width: 50px; text-align: center; max-width: 50px; }
.db-table td.col-code input { padding: 0; text-align: center; border: none; background: transparent; font-weight: bold; color: var(--text-secondary); width: 100%;}
.db-table th.col-desc, .db-table td.col-desc { width: auto; min-width: 100px; max-width: 200px; } 
.db-table th.col-unit, .db-table td.col-unit { width: 60px; min-width: 60px; text-align: center; max-width: 60px; }
.db-table th.col-price, .db-table td.col-price { width: 80px; min-width: 80px; text-align: right; max-width: 80px; }
.db-table th.col-action, .db-table td.col-action { width: 30px; min-width: 30px; text-align: center; max-width: 30px; }

.db-grid-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
    width: 100%;
}

.db-grid-container > div {
    width: 100%;
    overflow-x: auto;
    background: white;
    border-radius: 5px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

[data-theme="dark"] .db-grid-container > div {
    background: #2d3748;
}

/* --- Modales --- */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    backdrop-filter: blur(3px);
    animation: fadeIn 0.2s ease-out;
}

.modal-content {
    background-color: var(--bg-card);
    margin: 5vh auto;
    padding: 0;
    border-radius: 10px;
    width: 96%;
    height: auto;         /* Permite que crezca según el contenido */
    max-height: 90vh;     /* Límite máximo para no desbordar la pantalla */
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    overflow: hidden;
}

/* Sistema de tamaños unificados para Modales */
.modal-sm { max-width: 380px; }
.modal-md { max-width: 500px; }
.modal-lg { max-width: 800px; } /* Tamaño por defecto si no se especifica */
.modal-xl { max-width: 95%; height: 95vh; }

.modal-header {
    padding: 5px 20px;
    background: var(--primary);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.modal-body {
    padding: 20px;
    overflow-y: auto;
    flex-grow: 1;
}

/* --- Toast principal --- */
#toast {
    visibility: hidden;
    min-width: 280px;
    max-width: 90%;
    background-color: #2d3748;
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 14px 20px;
    position: fixed;
    z-index: 3000;
    left: 50%;
    bottom: 40px;
    transform: translateX(-50%);
    font-size: 14px;
    font-weight: 500;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    border-left: 4px solid var(--accent);
}

#toast.show { visibility: visible; animation: fadein 0.3s, fadeout 0.3s 2.7s; }

/* --- PWA Toast --- */
#pwa-toast {
    position: fixed;
    bottom: 75px; 
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-card);
    color: var(--text-primary);
    padding: 1rem;
    border-radius: 12px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    display: none;
    width: 90%;
    max-width: 400px;
    z-index: 2500; 
    border: 1px solid var(--border-color);
}

#pwa-toast.show { display: block; animation: slideUp 0.4s ease; }

.pwa-content {
    display: flex;
    gap: 15px;
    align-items: center;
}

.pwa-close {
    position: absolute;
    top: 5px;
    right: 10px;
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    color: var(--text-secondary);
}

/* --- Footer --- */
footer {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-top: 2rem;
}

/* --- Utilidades --- */
.text-right { text-align: right; }
.text-center { text-align: center; }
.font-bold { font-weight: 700; }

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

@keyframes slideUp {
    from { opacity: 0; transform: translate(-50%, 20px); }
    to { opacity: 1; transform: translate(-50%, 0); }
}

/* --- Media Queries (v1.3) --- */
@media (min-width: 768px) {
    .apu-header-grid { grid-template-columns: 3fr 1fr 1fr; }
    .apu-body-grid { grid-template-columns: 2.5fr 1fr; }
    .modal-content { width: 80%; height: auto; max-height: 90vh; margin: 5% auto; }
    body { font-size: 14px; }
    .container { padding: 15px; }
    .db-grid-container {
        display: grid;
        grid-template-columns: 1fr 1fr;
    }
    .db-grid-container > div:last-child { grid-column: 1 / -1; }
}

@media (min-width: 1200px) {
    .db-grid-container { grid-template-columns: repeat(3, 1fr); }
    .db-grid-container > div:last-child { grid-column: auto; }
}

@media (max-width: 767px) {
    .btn { padding: 6px 12px; min-height: 34px; }
    .btn-sm { padding: 4px 8px; min-height: 30px; }
    .panel { padding: 12px; }
    th, td { padding: 2px 3px; }
    .group-header { padding: 5px 5px; }
    #panel-editor table th, #panel-editor table td { font-size: 12px; padding: 2px 3px; }
    #panel-db .db-table th, #panel-db .db-table td { padding: 2px 2px; font-size: 11px; }
}

/* --- Sortable --- */
.sortable-ghost {
    background-color: #ebf8ff !important;
    opacity: 0.8;
}

[data-theme="dark"] .sortable-ghost {
    background-color: #2c5282 !important;
}

.sortable-drag {
    background-color: #fff;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* --- Drag & Drop Cursors (Solo B1 y Editor) --- */
/* Aplicar cursor solo a las tablas permitidas */
#b1-body tr,
#table-mat tbody tr,
#table-mo tbody tr,
#table-eq tbody tr { 
    cursor: grab; 
}

/* Estado activo solo para las tablas permitidas */
#b1-body tr:active,
#table-mat tbody tr:active,
#table-mo tbody tr:active,
#table-eq tbody tr:active { 
    cursor: grabbing; 
}

/* --- Conflict Modal --- */
.conflict-options {
    display: grid;
    gap: 10px;
    margin-top: 15px;
}

.conflict-options .btn { width: 100%; justify-content: center; }

@media (min-width: 768px) {
    .conflict-options { grid-template-columns: 1fr 1fr; }
}

/* --- Clases de Utilidad para JS (Cruciales para Dark Mode) --- */
.row-highlight { background-color: var(--bg-highlight) !important; }
.row-success { background-color: var(--bg-success-light) !important; }
.row-danger { background-color: var(--bg-danger-light) !important; }
.row-total {
    background-color: var(--bg-highlight) !important;
    border-top: 2px solid var(--accent) !important;
    font-weight: 700;
    color: var(--text-primary) !important;
}

/* Calculadora Texto */
.text-calc-material { color: var(--success) !important; font-weight: bold; }
.text-calc-special { color: var(--purple) !important; font-weight: bold; }
.text-calc-work { color: var(--warning) !important; font-weight: bold; }

/* Ajustes para Inputs solo lectura */
input[readonly] {
    background-color: var(--bg-card-alt) !important;
    color: var(--text-secondary);
    border-color: var(--border-color);
}

.search-result-item {
    padding: 8px 10px;
    cursor: pointer;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-card);
    color: var(--text-primary);
}
.search-result-item:hover {
    background-color: var(--bg-highlight);
}

/* --- Personalización Global del Scrollbar --- */

/* 1. Estándar para Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--scroll-thumb) var(--scroll-track);
}

/* 2. Estilos para Chrome, Edge y Safari */
::-webkit-scrollbar {
    width: 10px;  /* Ancho para scroll vertical */
    height: 10px; /* Alto para scroll horizontal */
}

::-webkit-scrollbar-track {
    background-color: var(--scroll-track);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background-color: var(--scroll-thumb);
    border-radius: 6px;
    /* Un pequeño borde del mismo color que el track da un efecto de "padding" muy elegante */
    border: 2px solid var(--scroll-track); 
    transition: background-color 0.2s;
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--scroll-thumb-hover);
}

/* Hacer el scrollbar horizontal de las tablas un poco más sutil */
.table-container::-webkit-scrollbar {
    height: 8px;
}
.table-container::-webkit-scrollbar-thumb {
    border-width: 1px;
}

/* --- Correcciones Calculadora --- */
/* 1. Contenedor del buscador (Evita congelamientos al quitar estilos en línea) */
.calc-search-container {
    flex: 2;
    min-width: 250px;
    position: relative;
}

/* 2. Icono de lupa (Color correcto según tema) */
.search-icon-inside {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted); /* Soluciona icono invisible */
    pointer-events: none;     /* Permite hacer clic en el input a través del icono */
}

/* 3. Encabezados de categorías (Materiales/MO/Equipos) */
.calc-category-row {
    background-color: var(--bg-card-alt) !important; /* Se adapta al tema */
    color: var(--primary);
    border-bottom: 2px solid var(--border-color);
}

.calc-category-cell {
    font-weight: bold;
    font-size: 0.85rem;
    padding: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* --- BARRA DE NAVEGACIÓN (Estilos Base - Móvil) --- */
.app-nav {
    position: fixed;
    bottom: 0 !important;   /* ¡IMPORTANTE! Fuerza pegado abajo */
    top: auto !important;   /* ¡IMPORTANTE! Anula cualquier top de JS o Desktop */
    left: 0;
    width: 100%;
    height: 50px;
    background: rgba(255, 255, 255, 0.95);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-around;
    align-items: center;
    z-index: 2000;
    padding-bottom: env(safe-area-inset-bottom);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 0;
    transform: none !important; /* Evita que se mueva lateralmente en móvil */
    transition: none; /* En móvil no queremos animaciones de posición */
}

/* Modo Oscuro Móvil */
[data-theme="dark"] .app-nav {
    background: rgba(30, 41, 59, 0.95);
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* Items de navegación (Móvil) */
.nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: transparent; /* Importante: Fondo transparente en móvil */
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0;
    height: 100%;
    position: relative;
    transition: color 0.2s ease; /* Solo animar color, no fondo */
}

.nav-icon { font-size: 1.2rem; margin-bottom: 2px; transition: transform 0.2s; }
/* Asegurar que el span del texto sea visible */
.nav-label { 
    font-size: 0.7rem; 
    font-weight: 500;
    margin-top: 2px;
}

/* Estado Activo en Móvil (Modo Claro) */
.nav-item.active { color: var(--primary); background: transparent; }
/* Icono activo sube un poco y crece */
.nav-item.active .nav-icon { transform: translateY(-2px); font-size: 1.3rem; }

/* Estado Activo en Móvil (Modo Oscuro) */
[data-theme="dark"] .nav-item.active { 
    color: #60a5fa; /* Azul claro brillante */
    background: transparent; /* Asegurar que no haya fondo gris tapando */
    text-shadow: 0 0 10px rgba(96, 165, 250, 0.4); /* Glow suave */
}

/* Ajuste Body Móvil */
body { padding-bottom: 60px; }


/* --- 2. ESCRITORIO (Pantallas > 769px) --- */
@media (min-width: 769px) {
    
    body {
        padding-top: 100px;
        padding-bottom: 10px;
    }

    .app-nav {
        /* Reiniciamos propiedades de móvil */
        bottom: auto !important; 
        width: auto;
        height: 50px;
        border-radius: 25px;
        padding: 5px 10px;
        
        /* Posicionamiento Escritorio */
        top: 60px !important; /* Posición INICIAL (Debajo del header) */
        left: 50%;
        transform: translateX(-50%) !important;
        
        /* Estilos visuales */
        min-width: 450px;
        border: 1px solid var(--border-color);
        background: rgba(255, 255, 255, 0.85); 
        box-shadow: 0 4px 20px rgba(0,0,0,0.08);
        gap: 5px;
        
        /* ANIMACIÓN SUAVE */
        transition: top 0.4s cubic-bezier(0.25, 0.8, 0.25, 1), background-color 0.3s;
    }

    /* CLASE MAGICA: Cuando JS detecta scroll abajo, aplicamos esto */
    .app-nav.sticky-mode {
        top: 15px !important; /* Se pega al techo (con margen elegante) */
        box-shadow: 0 10px 30px rgba(0,0,0,0.15); /* Más sombra al flotar */
        background: rgba(255, 255, 255, 0.95); /* Más sólido */
    }

    [data-theme="dark"] .app-nav {
        background: rgba(30, 41, 59, 0.85);
        border-color: rgba(255,255,255,0.1);
    }
    
    [data-theme="dark"] .app-nav.sticky-mode {
        background: rgba(30, 41, 59, 0.98);
    }

    /* Estilos items escritorio */
    .nav-item { flex-direction: row; gap: 8px; padding: 0 20px; border-radius: 20px; }
    .nav-label { font-size: 0.9rem; }
    .nav-icon { font-size: 1rem; margin-bottom: 0; }
    
    .nav-item { 
        /* Aseguramos que tenga borde transparente para evitar saltos al activar */
        border: 1px solid transparent; 
        color: var(--text-secondary);
        background: transparent;
    }
    
    .nav-item:hover:not(.active) { 
        background-color: rgba(0,0,0,0.03); 
        color: var(--primary); 
    }

    /* NUEVO ESTILO ACTIVO: Resaltar Texto e Icono (Sin relleno sólido) */
    .nav-item.active {
        background-color: var(--bg-highlight) !important; /* Fondo muy suave (casi blanco/azul claro) */
        color: var(--primary) !important;                 /* El texto e icono se vuelven AZULES */
        font-weight: 700;                                 /* Texto más grueso */
        border: 1px solid var(--primary);                 /* Borde fino del color principal */
        box-shadow: 0 4px 12px rgba(37, 99, 235, 0.15) !important; /* Sombra suave coloreada */
        transform: translateY(-1px);
    }

    /* Ajuste específico para el icono cuando está activo */
    .nav-item.active .nav-icon { 
        transform: scale(1.1); /* Hacer el icono un poquito más grande */
        font-size: 1.1rem; 
    }

    /* AJUSTE MODO OSCURO (Dentro de la media query) */
    [data-theme="dark"] .nav-item.active { 
        background-color: rgba(59, 130, 246, 0.15) !important; /* Azul oscuro transparente */
        color: #60a5fa !important;       /* Azul claro brillante para texto */
        border-color: #60a5fa;           /* Borde azul claro */
        box-shadow: 0 4px 12px rgba(96, 165, 250, 0.2) !important; /* Resplandor suave */
    }
}

/* --- ESTILOS PARA EL MODAL DE REPORTES (Matriz 3x2) --- */

.report-grid {
    display: grid;
    /* Crea 3 columnas de igual tamaño */
    grid-template-columns: repeat(3, 1fr);
    gap: 15px; /* Espacio entre botones */
    margin-top: 15px;
    padding: 5px;
}

.btn-report {
    display: flex;
    flex-direction: column; /* Icono arriba, texto abajo */
    align-items: center;
    justify-content: center;
    padding: 20px 10px;
    background-color: var(--bg-card-alt);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-primary);
    gap: 10px;
    height: 100%; /* Para que todos tengan la misma altura */
    min-height: 110px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

/* Iconos grandes */
.btn-report i {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 5px;
    transition: transform 0.2s;
}

/* Efecto Hover */
.btn-report:hover {
    background-color: var(--bg-highlight);
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.btn-report:hover i {
    transform: scale(1.1);
}

/* Estilo especial para el último botón (Exportación Masiva) */
.btn-report:last-child {
    background-color: var(--bg-success-light);
    border-color: var(--success);
    color: var(--text-primary);
    font-weight: 700;
}

.btn-report:last-child i {
    color: var(--success);
}

.btn-report:last-child:hover {
    background-color: #d1fae5; /* Verde muy claro al hover */
    /* En modo oscuro, ajustamos abajo */
}

/* --- RESPONSIVIDAD --- */

/* Tablets (menos de 768px): Matriz 2x3 */
@media (max-width: 768px) {
    .report-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Móviles (menos de 480px): Una columna (pila) */
@media (max-width: 480px) {
    .report-grid {
        grid-template-columns: 1fr;
    }
    
    .btn-report {
        flex-direction: row; /* Icono a la izquierda en móviles para ahorrar espacio vertical */
        justify-content: flex-start;
        padding: 15px;
        min-height: auto;
        text-align: left;
    }
    
    .btn-report i {
        font-size: 1.5rem;
        margin-bottom: 0;
        margin-right: 15px;
    }
}

/* Ajustes Modo Oscuro */
[data-theme="dark"] .btn-report:hover {
    background-color: rgba(59, 130, 246, 0.2); /* Azul oscuro transparente */
}

[data-theme="dark"] .btn-report:last-child:hover {
    background-color: rgba(16, 185, 129, 0.2); /* Verde oscuro transparente */
}

/* --- Estilos Selector de Formato (Reportes) --- */
.format-selector {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin: 10px auto 20px auto;
    max-width: 400px;
}

.format-option {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    background-color: var(--bg-card);
    border: 2px solid var(--border-color); /* Borde más visible */
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    user-select: none;
    position: relative;
}

.format-option i {
    font-size: 1.2rem;
}

/* Efecto Hover */
.format-option:hover {
    border-color: var(--primary);
    background-color: var(--bg-highlight);
    transform: translateY(-2px);
}

/* Estado Activo (Seleccionado) */
.format-option.active {
    background-color: var(--primary);
    color: white;
    border-color: var(--primary);
    box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
}

/* Ajuste específico para iconos en estado activo */
.format-option.active i {
    color: white; 
}

/* Ajustes Modo Oscuro */
[data-theme="dark"] .format-option {
    background-color: var(--bg-card-alt);
    border-color: var(--border-color);
}

[data-theme="dark"] .format-option:hover {
    background-color: rgba(59, 130, 246, 0.2);
}

[data-theme="dark"] .format-option.active {
    background-color: var(--accent);
    border-color: var(--accent);
    color: white;
}

/* --- Estilos Carga Masiva (Gestión de Insumos) --- */

.bulk-upload-container {
    background: var(--bg-card-alt);
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.bulk-upload-label {
    color: var(--text-secondary);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
    margin-right: 5px;
}

/* Estilo personalizado para el input file */
.bulk-file-input {
    flex-grow: 1;
    max-width: 250px;
    padding: 6px;
    background: var(--input-bg);
    border: 1px dashed var(--border-color);
    border-radius: 4px;
    font-size: 0.85rem;
    color: var(--text-primary);
    cursor: pointer;
}

.bulk-file-input::file-selector-button {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    padding: 4px 8px;
    margin-right: 10px;
    cursor: pointer;
    transition: background 0.2s;
}

.bulk-file-input:hover::file-selector-button {
    background-color: var(--bg-highlight);
}

/* Estilo para el Select */
.bulk-type-select {
    padding: 8px 12px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background-color: var(--input-bg);
    color: var(--text-primary);
    font-weight: 500;
    cursor: pointer;
    min-width: 130px;
}

.bulk-type-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.bulk-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* Ajustes Modo Oscuro */
[data-theme="dark"] .bulk-upload-container {
    background: var(--bg-card);
    border-color: var(--border-color);
}

[data-theme="dark"] .bulk-file-input {
    background: rgba(0,0,0,0.2);
}

[data-theme="dark"] .bulk-file-input::file-selector-button {
    background-color: var(--bg-card-alt);
    color: var(--text-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .bulk-file-input:hover::file-selector-button {
    background-color: var(--primary);
    color: white;
}

/* --- Indicador de Guardado (Línea Sutil) --- */
.save-line-title {
    position: absolute;
    bottom: -4px;
    left: 0;
    height: 2px;
    width: 0;
    background-color: var(--success);
    border-radius: 2px;
    transition: width 0.4s ease, background-color 0.4s ease, opacity 0.5s ease;
    opacity: 0;
}

/* Estado: Guardando */
.save-line-title.saving {
    width: 100%;
    background-color: var(--warning);
    opacity: 1;
    /* Efecto de pulso suave mientras piensa */
    animation: pulse-line 1s infinite alternate; 
}

/* Estado: Guardado Exitoso */
.save-line-title.saved {
    width: 100%;
    background-color: var(--success);
    opacity: 1;
}

/* Estado: Desvaneciéndose */
.save-line-title.fade {
    opacity: 0;
    transition: opacity 1s ease-in; /* Desaparece lentamente */
}

@keyframes pulse-line {
    from { opacity: 0.5; }
    to { opacity: 1; }
}

/* --- Columnas Colapsables (Clic en Encabezado) --- */
.toggleable-col {
    cursor: pointer;
    transition: background-color 0.2s;
}

.toggleable-col:hover {
    background-color: #2c5282; /* Feedback visual al pasar el ratón */
}

th.col-collapsed {
    width: 20px !important;
    min-width: 20px !important;
    max-width: 20px !important;
    padding: 5px !important;
    color: transparent !important; /* Oculta el texto original */
    position: relative;
    background-color: #4a5568 !important; /* Fondo distintivo */
}

[data-theme="dark"] th.col-collapsed {
    background-color: #1a202c !important;
}

/* Ícono de "+" centrado cuando está colapsado */
th.col-collapsed::after {
    content: '\f067'; /* Código FontAwesome para fa-plus */
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    color: white;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    font-size: 14px;
}

/* Encoge la celda de datos a la misma medida que el encabezado */
td.col-collapsed {
    width: 20px !important;
    min-width: 20px !important;
    max-width: 20px !important;
    padding: 0 !important;
    color: transparent !important; /* Oculta el texto suelto */
    font-size: 0 !important;
    overflow: hidden !important;
    background-color: var(--bg-body); /* Fondo sutil para marcar la columna cerrada */
}

/* Ajuste de fondo para modo oscuro en la columna cerrada */
[data-theme="dark"] td.col-collapsed {
    background-color: var(--bg-card-alt);
}

/* Oculta cualquier input, botón o div dentro de la celda colapsada */
td.col-collapsed * {
    display: none !important;
}