/* ============================================================
   TABLERO LOGÍSTICA — STYLES
   Dark theme with glassmorphism, premium gradients
   ============================================================ */

/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    /* Background */
    --bg-root: #0b0e14;
    --bg-surface: #131720;
    --bg-card: rgba(22, 28, 40, 0.85);
    --bg-card-hover: rgba(30, 38, 55, 0.95);
    --bg-elevated: rgba(35, 43, 60, 0.7);

    /* Borders */
    --border-subtle: rgba(99, 102, 241, 0.12);
    --border-accent: rgba(99, 102, 241, 0.3);

    /* Text */
    --text-primary: #f1f5f9;
    --text-secondary: #8b95a8;
    --text-muted: #5b6477;

    /* Accent */
    --accent-indigo: #6366f1;
    --accent-violet: #8b5cf6;
    --accent-cyan: #06b6d4;
    --accent-emerald: #10b981;
    --accent-amber: #f59e0b;
    --accent-red: #ef4444;
    --accent-pink: #ec4899;
    --accent-teal: #14b8a6;
    --accent-orange: #f97316;
    --accent-lime: #84cc16;

    /* Gradient */
    --gradient-primary: linear-gradient(135deg, #6366f1, #8b5cf6);
    --gradient-header: linear-gradient(135deg, #0f1322 0%, #1a1040 50%, #0f1322 100%);

    /* Spacing */
    --sp-xs: 4px;
    --sp-sm: 8px;
    --sp-md: 16px;
    --sp-lg: 24px;
    --sp-xl: 32px;

    /* Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;

    /* Shadow */
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3), 0 0 0 1px var(--border-subtle);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.15);

    /* Transition */
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    font-size: 14px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background:
        radial-gradient(ellipse 900px 500px at 15% -10%, rgba(99, 102, 241, 0.10), transparent 60%),
        radial-gradient(ellipse 800px 500px at 100% 15%, rgba(139, 92, 246, 0.07), transparent 55%),
        var(--bg-root);
    background-attachment: fixed;
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

/* === Loading Overlay === */
.loading-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--bg-root);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease;
}
.loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}
.loader-container { text-align: center; }
.loader-spinner {
    width: 48px; height: 48px;
    border: 3px solid var(--border-subtle);
    border-top-color: var(--accent-indigo);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 16px;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loader-text { color: var(--text-secondary); font-size: 0.95rem; }

/* === Header === */
.header {
    background: var(--gradient-header);
    border-bottom: 1px solid var(--border-subtle);
    padding: var(--sp-md) var(--sp-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
}
.header-left {
    display: flex;
    align-items: center;
    gap: var(--sp-md);
}
.logo-icon {
    width: 40px; height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 0 16px rgba(99, 102, 241, 0.3);
}
.header h1 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #f1f5f9, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.header-badge {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 3px 8px;
    border-radius: 20px;
    background: rgba(99, 102, 241, 0.2);
    color: var(--accent-indigo);
    border: 1px solid rgba(99, 102, 241, 0.3);
}
.status-pill {
    font-size: 0.8rem;
    color: var(--text-secondary);
    padding: 4px 12px;
    border-radius: 20px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
}

/* === Tab Navigation === */
.tab-nav {
    display: flex;
    gap: 2px;
    padding: var(--sp-sm) var(--sp-xl);
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-subtle);
    overflow-x: auto;
    position: sticky;
    top: 65px;
    z-index: 99;
}
.tab-btn {
    display: flex;
    align-items: center;
    gap: var(--sp-sm);
    padding: 10px 20px;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    position: relative;
}
.tab-btn:hover {
    color: var(--text-secondary);
    background: var(--bg-elevated);
}
.tab-btn.active {
    color: var(--text-primary);
    background: rgba(99, 102, 241, 0.12);
}
.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -9px;
    left: 50%;
    transform: translateX(-50%);
    width: 40%;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 2px;
}
.tab-btn svg { opacity: 0.6; }
.tab-btn.active svg { opacity: 1; }

/* Preguntar IA: destacado con acento propio (cyan) para diferenciarlo del
   resto de las pestañas, activo o no. */
.tab-btn-ia {
    color: var(--accent-cyan);
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.25);
}
.tab-btn-ia svg { opacity: 0.9; }
.tab-btn-ia:hover {
    color: var(--accent-cyan);
    background: rgba(6, 182, 212, 0.18);
}
.tab-btn-ia.active {
    color: var(--text-primary);
    background: rgba(6, 182, 212, 0.22);
    border-color: rgba(6, 182, 212, 0.4);
}
.tab-btn-ia.active::after { background: linear-gradient(135deg, var(--accent-cyan), var(--accent-teal)); }
.tab-btn-ia.active svg { opacity: 1; }

/* === Filters Bar === */
.filters-bar {
    display: flex;
    align-items: flex-end;
    gap: var(--sp-md);
    padding: var(--sp-md) var(--sp-xl);
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-subtle);
    flex-wrap: wrap;
}
.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--sp-xs);
    position: relative;
}
.filter-group label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
}
.filter-dropdown {
    position: relative;
}
.filter-toggle {
    display: flex;
    align-items: center;
    gap: var(--sp-sm);
    padding: 7px 14px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.8rem;
    cursor: pointer;
    transition: var(--transition);
    min-width: 160px;
    justify-content: space-between;
}
.filter-toggle:hover {
    border-color: var(--border-accent);
    background: var(--bg-card-hover);
}
.filter-toggle.has-selection {
    border-color: var(--accent-indigo);
    color: var(--text-primary);
}
.filter-toggle .arrow { font-size: 0.6rem; opacity: 0.5; }
.filter-menu {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    min-width: 200px;
    max-height: 280px;
    overflow-y: auto;
    background: var(--bg-surface);
    border: 1px solid var(--border-accent);
    border-radius: var(--radius-sm);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
    z-index: 200;
    display: none;
    padding: var(--sp-xs);
}
.filter-menu.open { display: block; }
.filter-menu label {
    display: flex;
    align-items: center;
    gap: var(--sp-sm);
    padding: 6px 10px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 400;
    text-transform: none;
    letter-spacing: 0;
    color: var(--text-secondary);
    transition: var(--transition);
}
.filter-menu label:hover {
    background: var(--bg-elevated);
    color: var(--text-primary);
}
.filter-menu input[type="checkbox"] {
    accent-color: var(--accent-indigo);
    width: 14px;
    height: 14px;
}
.btn-clear-filters {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 7px 14px;
    background: transparent;
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-sm);
    color: var(--accent-red);
    font-family: inherit;
    font-size: 0.78rem;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 0;
    align-self: flex-end;
}
.btn-clear-filters:hover {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--accent-red);
}

/* === Main Content === */
.main-content {
    padding: var(--sp-lg) var(--sp-xl);
    max-width: 1600px;
    margin: 0 auto;
}
.view { display: none; }
.view.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

.view.active .kpi-card,
.view.active .chart-card,
.view.active .guide-tab {
    animation: fadeIn 0.4s ease backwards;
}
.view.active .kpi-row .kpi-card:nth-child(1) { animation-delay: 0.02s; }
.view.active .kpi-row .kpi-card:nth-child(2) { animation-delay: 0.06s; }
.view.active .kpi-row .kpi-card:nth-child(3) { animation-delay: 0.10s; }
.view.active .kpi-row .kpi-card:nth-child(4) { animation-delay: 0.14s; }
.view.active .kpi-row .kpi-card:nth-child(5) { animation-delay: 0.18s; }
.view.active .kpi-row .kpi-card:nth-child(6) { animation-delay: 0.22s; }
.view.active .chart-grid .chart-card:nth-child(1) { animation-delay: 0.08s; }
.view.active .chart-grid .chart-card:nth-child(2) { animation-delay: 0.13s; }
.view.active .chart-grid .chart-card:nth-child(3) { animation-delay: 0.18s; }
.view.active .chart-grid .chart-card:nth-child(4) { animation-delay: 0.23s; }
.view.active .guide-tab:nth-child(1) { animation-delay: 0.04s; }
.view.active .guide-tab:nth-child(2) { animation-delay: 0.09s; }
.view.active .guide-tab:nth-child(3) { animation-delay: 0.14s; }
.view.active .guide-tab:nth-child(4) { animation-delay: 0.19s; }

/* === KPI Cards === */
.kpi-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--sp-md);
    margin-bottom: var(--sp-lg);
}
.kpi-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: var(--sp-lg) var(--sp-md);
    backdrop-filter: blur(8px);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.kpi-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition);
}
.kpi-card:hover::before { opacity: 1; }
.kpi-card:hover {
    border-color: var(--border-accent);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}
.kpi-label {
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    margin-bottom: var(--sp-sm);
}
.kpi-value {
    font-size: 1.7rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    background: linear-gradient(135deg, #f1f5f9, #c8cdd5);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
    margin-bottom: 4px;
}
.kpi-value-sm { font-size: 1.1rem !important; }
.kpi-sub {
    font-size: 0.72rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* KPI accents */
.kpi-card.accent-warn .kpi-value {
    background: linear-gradient(135deg, var(--accent-amber), var(--accent-orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.kpi-card.accent-warn::before {
    background: linear-gradient(135deg, var(--accent-amber), var(--accent-orange));
}
.kpi-card.accent-danger .kpi-value {
    background: linear-gradient(135deg, var(--accent-red), var(--accent-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.kpi-card.accent-danger::before {
    background: linear-gradient(135deg, var(--accent-red), var(--accent-pink));
}
.kpi-card.accent-ok .kpi-value {
    background: linear-gradient(135deg, var(--accent-emerald), var(--accent-teal));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.kpi-card.accent-ok::before {
    background: linear-gradient(135deg, var(--accent-emerald), var(--accent-teal));
}

/* === Chart Cards === */
.chart-grid {
    display: grid;
    gap: var(--sp-md);
    margin-bottom: var(--sp-lg);
}
.chart-grid.grid-2 { grid-template-columns: repeat(2, 1fr); }
.chart-grid.grid-1 { grid-template-columns: 1fr; }

.chart-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: var(--sp-lg);
    backdrop-filter: blur(8px);
    transition: var(--transition);
}
.chart-card:hover {
    border-color: var(--border-accent);
    box-shadow: var(--shadow-card);
}
.chart-card h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--sp-md);
    letter-spacing: -0.01em;
}
.chart-card h3::before {
    content: '';
    flex: none;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--gradient-primary);
    box-shadow: 0 0 6px rgba(99, 102, 241, 0.6);
}
.chart-wrap {
    position: relative;
    height: 280px;
}
.chart-wrap-tall { height: 380px; }

/* === Data Table === */
.table-wrap {
    overflow-x: auto;
    max-height: 420px;
    overflow-y: auto;
}
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8rem;
}
.data-table thead {
    position: sticky;
    top: 0;
    z-index: 2;
}
.data-table th {
    background: var(--bg-elevated);
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.68rem;
    letter-spacing: 0.05em;
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border-subtle);
    white-space: nowrap;
    cursor: pointer;
}
.data-table th:hover { color: var(--text-primary); }
.data-table td {
    padding: 8px 14px;
    border-bottom: 1px solid rgba(99, 102, 241, 0.05);
    color: var(--text-secondary);
    white-space: nowrap;
}
.data-table tbody tr:nth-child(even) {
    background: rgba(255, 255, 255, 0.015);
}
.data-table tbody tr:hover {
    background: rgba(99, 102, 241, 0.09);
}
.data-table tbody tr:hover td {
    color: var(--text-primary);
}
.td-right { text-align: right !important; }
.accent-danger { color: var(--accent-red); font-weight: 600; }
.accent-ok { color: var(--accent-emerald); font-weight: 600; }
.row-subtotal td { color: var(--text-primary); font-style: italic; border-top: 1px solid var(--border-accent); }
.row-total td { color: var(--text-primary); font-weight: 700; border-top: 2px solid var(--border-accent); background: rgba(99, 102, 241, 0.06); }

/* === Guía del Tablero === */
.guide-wrap {
    display: flex;
    flex-direction: column;
    gap: var(--sp-lg);
}
.guide-tab {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: var(--sp-lg);
    backdrop-filter: blur(8px);
    transition: var(--transition);
}
.guide-tab:hover {
    border-color: var(--border-accent);
    box-shadow: var(--shadow-card);
}
.guide-tab h2 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--sp-sm);
}
.guide-purpose {
    color: var(--text-secondary);
    font-size: 0.88rem;
    line-height: 1.5;
    margin-bottom: var(--sp-lg);
    padding-bottom: var(--sp-lg);
    border-bottom: 1px solid var(--border-subtle);
}
.guide-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--sp-md);
}
.guide-item {
    background: var(--bg-elevated);
    border-radius: var(--radius-sm);
    padding: var(--sp-md);
    border: 1px solid transparent;
    transition: var(--transition);
}
.guide-item:hover {
    border-color: var(--border-accent);
    background: var(--bg-card-hover);
}
.guide-item h4 {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--accent-cyan);
    margin-bottom: var(--sp-xs);
}
.guide-item p {
    font-size: 0.82rem;
    line-height: 1.55;
    color: var(--text-secondary);
}
.guide-item p strong {
    color: var(--text-primary);
}

/* === Cargar Datos === */
.upload-field {
    display: flex;
    flex-direction: column;
    gap: var(--sp-sm);
    max-width: 420px;
}
.upload-field label {
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
}
.upload-field input[type="password"],
.upload-field input[type="file"] {
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.85rem;
}
.upload-field input[type="password"]:focus,
.upload-field input[type="file"]:focus {
    outline: none;
    border-color: var(--border-accent);
}
.btn-upload {
    align-self: flex-start;
    padding: 8px 18px;
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-sm);
    color: #fff;
    font-family: inherit;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}
.btn-upload:hover { box-shadow: var(--shadow-glow); }
.btn-upload:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    box-shadow: none;
}
.upload-status { margin-top: var(--sp-md); font-size: 0.82rem; line-height: 1.6; }
.upload-status.success { color: var(--accent-emerald); }
.upload-status.error { color: var(--accent-red); }
.upload-status .catalog-mismatch {
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-sm);
    padding: var(--sp-md);
    margin-top: var(--sp-sm);
    color: var(--text-secondary);
}
.upload-status .catalog-mismatch strong { color: var(--accent-red); }
.upload-status .catalog-mismatch ul { margin: var(--sp-xs) 0 var(--sp-sm) var(--sp-md); }
.carga-status-panel {
    display: flex;
    gap: var(--sp-xl);
    flex-wrap: wrap;
    color: var(--text-secondary);
    font-size: 0.85rem;
}
.carga-status-panel strong { color: var(--text-primary); }

/* === Preguntar IA (chat) === */
.ia-chat-log {
    display: flex;
    flex-direction: column;
    gap: var(--sp-md);
    max-height: 480px;
    overflow-y: auto;
    padding: var(--sp-md);
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    margin-bottom: var(--sp-md);
    min-height: 120px;
}
.ia-msg { max-width: 80%; }
.ia-msg-user { align-self: flex-end; text-align: right; }
.ia-msg-ia { align-self: flex-start; }
.ia-msg-role {
    font-size: 0.68rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    margin-bottom: 2px;
}
.ia-msg-text {
    display: inline-block;
    padding: 10px 14px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    line-height: 1.5;
    white-space: pre-wrap;
}
.ia-msg-user .ia-msg-text { background: var(--gradient-primary); color: #fff; }
.ia-msg-ia .ia-msg-text { background: var(--bg-card); border: 1px solid var(--border-subtle); color: var(--text-primary); }
.ia-chat-input-row {
    display: flex;
    gap: var(--sp-sm);
    align-items: flex-end;
}
.ia-chat-input {
    flex: 1;
    resize: vertical;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.85rem;
}
.ia-chat-input:focus { outline: none; border-color: var(--border-accent); }

/* === Footer === */
.footer {
    padding: var(--sp-md) var(--sp-xl);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.75rem;
    border-top: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
}

/* === Responsive === */
@media (max-width: 1400px) {
    .kpi-row { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 1100px) {
    .chart-grid.grid-2 { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .header { padding: var(--sp-md); }
    .main-content { padding: var(--sp-md); }
    .tab-nav { padding: var(--sp-sm) var(--sp-md); }
    .filters-bar { padding: var(--sp-sm) var(--sp-md); }
    .kpi-row { grid-template-columns: repeat(2, 1fr); }
    .tab-btn span { display: none; }
}

/* === Scrollbar === */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-subtle); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-indigo); }