/* ==========================================================================
   AQUÍ DESIGN SYSTEM — TELEMETRY DARK (STITCH AI CONSOLIDATION)
   Paleta Obsidiana Profesional + Acentos Cobalto / Índigo / Esmeralda
   Vanilla CSS Puro, Cero Dependencias Pesadas
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800;900&family=Inter:wght@400;500;600;700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:opsz,wght,FILL,GRAD@20..48,100..700,0..1,-50..200');

:root {
    /* Paleta Cromática Base */
    --bg-base: #0B0F17;
    --bg-surface: #0F131C;
    --bg-surface-low: #141822;
    --bg-surface-card: #181C26;
    --bg-surface-high: #212634;
    --bg-surface-highest: #2C3242;
    --bg-input: #0A0E16;

    /* Acentos Principales */
    --primary: #3B82F6;
    --primary-light: #60A5FA;
    --primary-glow: rgba(59, 130, 246, 0.35);
    --primary-gradient: linear-gradient(135deg, #3B82F6 0%, #6366F1 100%);
    --secondary: #44DEAE;
    --secondary-glow: rgba(68, 222, 174, 0.3);
    --tertiary: #6366F1;
    --cyan-accent: #06B6D4;

    /* Estados Semánticos */
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-danger: #EF4444;
    --color-info: #06B6D4;

    /* Tipografía y Textos */
    --text-main: #DFE2EE;
    --text-muted: #8C909F;
    --text-subtle: #5A5F70;
    --text-inverse: #0B0F17;
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

    /* Bordes, Sombras y Radios */
    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-card: #1E2536;
    --border-active: #3B82F6;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 25px rgba(59, 130, 246, 0.25);
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html, body {
    background-color: var(--bg-base);
    color: var(--text-main);
    font-family: var(--font-body);
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

/* Tipografía de Encabezados */
h1, h2, h3, h4, h5, h6, .font-heading {
    font-family: var(--font-heading);
    color: #FFFFFF;
    font-weight: 700;
    letter-spacing: -0.02em;
}

a {
    color: var(--primary-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: #FFFFFF;
}

/* Layout App Shell */
.app-layout {
    display: flex;
    min-height: 100vh;
    background-color: var(--bg-base);
}

/* Sidebar Fijo */
.app-sidebar {
    width: 260px;
    background-color: var(--bg-surface);
    border-right: 1px solid var(--border-card);
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    box-sizing: border-box;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 8px 24px 8px;
    border-bottom: 1px solid var(--border-subtle);
    margin-bottom: 16px;
}

.brand-logo .brand-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-glow);
}

.brand-logo .brand-text {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 900;
    letter-spacing: -0.05em;
    color: #FFFFFF;
}

.brand-logo .brand-dot {
    color: var(--cyan-accent);
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
}

.sidebar-section-title {
    font-size: 0.7rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-subtle);
    padding: 16px 12px 6px 12px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: var(--radius-md);
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: #FFFFFF;
    background-color: var(--bg-surface-high);
}

.nav-link.active {
    color: #FFFFFF;
    background: var(--primary-gradient);
    box-shadow: var(--shadow-glow);
}

.nav-link .material-symbols-outlined {
    font-size: 20px;
}

/* Área Principal de Contenido */
.app-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    background-color: var(--bg-base);
}

.app-topbar {
    height: 70px;
    border-bottom: 1px solid var(--border-card);
    background-color: rgba(15, 19, 28, 0.85);
    backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    position: sticky;
    top: 0;
    z-index: 40;
}

.app-container {
    padding: 32px;
    max-width: 1440px;
    margin: 0 auto;
    width: 100%;
}

/* Tarjetas y Paneles (Cards) */
.card-panel {
    background-color: var(--bg-surface-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.card-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

/* Grid de Métricas KPI */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.kpi-card {
    background-color: var(--bg-surface-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.kpi-card:hover {
    transform: translateY(-2px);
    border-color: var(--primary);
}

.kpi-label {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.kpi-value {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    color: #FFFFFF;
}

.kpi-sub {
    font-size: 0.8rem;
    color: var(--secondary);
    display: flex;
    align-items: center;
    gap: 4px;
    font-weight: 600;
}

/* Botones y Acciones */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    border: none;
    transition: all var(--transition-normal);
    text-decoration: none;
}

.btn-primary {
    background: var(--primary-gradient);
    color: #FFFFFF;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: var(--bg-surface-high);
    color: var(--text-main);
    border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
    background-color: var(--bg-surface-highest);
    color: #FFFFFF;
}

.btn-danger {
    background-color: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.4);
    color: var(--color-danger);
}

.btn-danger:hover {
    background-color: var(--color-danger);
    color: #FFFFFF;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
    border-radius: var(--radius-sm);
}

/* Formularios y Controles */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 16px;
}

.form-label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-muted);
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    background-color: var(--bg-input);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    color: #FFFFFF;
    font-family: var(--font-body);
    font-size: 0.95rem;
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

/* Tablas Modernas */
.data-table-container {
    overflow-x: auto;
    width: 100%;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.data-table th {
    padding: 12px 16px;
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-card);
    background-color: var(--bg-surface-low);
}

.data-table td {
    padding: 14px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    font-size: 0.9rem;
    color: var(--text-main);
    vertical-align: middle;
}

.data-table tr:hover td {
    background-color: rgba(255, 255, 255, 0.02);
}

/* Badges e Indicadores */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.badge-success {
    background-color: rgba(16, 185, 129, 0.15);
    color: var(--color-success);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-warning {
    background-color: rgba(245, 158, 11, 0.15);
    color: var(--color-warning);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-danger {
    background-color: rgba(239, 68, 68, 0.15);
    color: var(--color-danger);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-primary {
    background-color: rgba(59, 130, 246, 0.15);
    color: var(--primary-light);
    border: 1px solid rgba(59, 130, 246, 0.3);
}

/* Alertas y Notificaciones */
.alert-box {
    padding: 16px 20px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    font-size: 0.95rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 12px;
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.12);
    border: 1px solid var(--color-danger);
    color: #FCA5A5;
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.12);
    border: 1px solid var(--color-success);
    color: #86EFAC;
}

/* Utilidades de Código Monospace */
.code-pill {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    background-color: var(--bg-input);
    border: 1px solid var(--border-card);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    color: var(--secondary);
}

/* Responsive */
@media (max-width: 1024px) {
    .app-sidebar {
        width: 80px;
        padding: 20px 8px;
    }
    .brand-logo .brand-text, .nav-link span:not(.material-symbols-outlined), .sidebar-section-title {
        display: none;
    }
    .nav-link {
        justify-content: center;
        padding: 12px;
    }
    .app-topbar {
        padding: 0 20px;
    }
    .app-container {
        padding: 20px;
    }
}

@media (max-width: 768px) {
    .app-layout {
        flex-direction: column;
    }
    .app-sidebar {
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-card);
    }
    .sidebar-nav {
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 8px;
    }
    .kpi-grid {
        grid-template-columns: 1fr 1fr;
    }
}