/**
 * Ecosistema de Diseño Visual Tracert System EAS (https://gestion.tracertsystem.net/)
 * Basado en ISO 9241-210, WCAG 2.1 AA y promt_context.md
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root {
    /* Paleta Base Oscura de Alta Ergonomía (promt_context.md) */
    --bg-deep: #0F172A;        /* Navy profundo */
    --bg-panel: #1E293B;       /* Navy medio para paneles y tarjetas */
    --bg-surface: #334155;     /* Slate superficie elevada */
    --bg-input: #1E293B;
    --border-color: #334155;
    --border-highlight: #475569;

    /* Textos con Ratios WCAG 2.1 AA/AAA */
    --text-primary: #F8FAFC;   /* Contraste 15:1 */
    --text-secondary: #94A3B8; /* Contraste 7:1 */
    --text-muted: #64748B;

    /* Colores de Acento y Acción */
    --accent-primary: #2563EB; /* Azul eléctrico */
    --accent-hover: #1D4ED8;
    --accent-glow: rgba(37, 99, 235, 0.35);

    /* Colores Semánticos ISO 3864 */
    --semantic-success: #10B981; /* Verde esmeralda */
    --semantic-warning: #F59E0B; /* Ámbar */
    --semantic-error: #EF4444;   /* Rojo */
    --semantic-info: #0EA5E9;    /* Azul cielo */

    /* Tipografía */
    --font-ui: 'Inter', system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --font-code: 'JetBrains Mono', monospace;

    /* Espaciado de 8px Grid System */
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 20px 30px -10px rgba(37, 99, 235, 0.3);
}

/* ========================================================
   RESETEO Y BASE
   ======================================================== */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-ui);
    background-color: var(--bg-deep);
    color: var(--text-primary);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: block; /* Anulación de la restricción anterior de flex 100vh */
    overflow-x: hidden;
}

/* Tipografía */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 700;
    letter-spacing: -0.02em;
}

p {
    color: var(--text-secondary);
}

a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: #60A5FA;
}

/* ========================================================
   BARRA DE NAVEGACIÓN
   ======================================================== */
.navbar-tracert {
    background: rgba(15, 23, 42, 0.88);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1020;
    padding: 14px 0;
}

.navbar-brand img {
    height: 42px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

.nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    padding: 8px 16px !important;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

.nav-link:hover, .nav-link.active {
    color: var(--text-primary) !important;
    background: rgba(255, 255, 255, 0.05);
}

/* ========================================================
   HERO SECTION
   ======================================================== */
.hero-section {
    position: relative;
    padding: 80px 0 60px;
    background: radial-gradient(circle at 50% 0%, rgba(37, 99, 235, 0.18) 0%, rgba(15, 23, 42, 0) 70%);
    border-bottom: 1px solid var(--border-color);
}

.hero-badge {
    background: rgba(37, 99, 235, 0.15);
    border: 1px solid rgba(59, 130, 246, 0.4);
    color: #60A5FA;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.15;
    margin-top: 18px;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #FFFFFF 0%, #94A3B8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.1rem;
    }
}

.hero-lead {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 780px;
    margin: 0 auto 30px;
}

/* Estadísticas de Confianza */
.stats-badge-card {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    text-align: center;
    transition: transform 0.2s ease;
}

.stats-badge-card:hover {
    transform: translateY(-3px);
    border-color: var(--border-highlight);
}

.stats-number {
    font-family: var(--font-code);
    font-size: 1.8rem;
    font-weight: 700;
    color: #38BDF8;
}

.stats-label {
    font-size: 0.82rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 4px;
}

/* ========================================================
   CATÁLOGO DE PRODUCTOS (GRID & TARJETAS)
   ======================================================== */
.catalog-section {
    padding: 70px 0;
}

.filter-btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-bottom: 35px;
}

.btn-filter {
    background: var(--bg-panel);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 8px 18px;
    border-radius: var(--radius-full);
    font-size: 0.88rem;
    font-weight: 500;
    transition: all 0.2s ease;
    cursor: pointer;
}

.btn-filter:hover {
    color: var(--text-primary);
    background: var(--bg-surface);
    border-color: var(--border-highlight);
}

.btn-filter.active {
    background: var(--accent-primary);
    color: #FFFFFF;
    border-color: var(--accent-primary);
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
}

/* Tarjeta de Solución / Producto */
.product-card {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.28s ease;
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--card-accent, var(--accent-primary));
    opacity: 0.8;
}

.product-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-highlight);
    box-shadow: var(--shadow-hover);
}

.product-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 16px;
}

.product-icon-wrap {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    color: var(--card-accent, #38BDF8);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.product-category-tag {
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-secondary);
    padding: 4px 10px;
    border-radius: var(--radius-full);
}

.product-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
    line-height: 1.35;
}

.product-desc {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.55;
    margin-bottom: 20px;
    flex-grow: 1;
}

.product-actions {
    display: flex;
    gap: 8px;
    margin-top: auto;
}

.btn-card-demo {
    flex: 1;
    font-size: 0.82rem;
    font-weight: 600;
    padding: 9px 12px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all 0.2s ease;
}

.btn-card-demo:hover {
    background: var(--bg-surface);
    color: #FFFFFF;
    border-color: var(--border-highlight);
}

.btn-card-select {
    flex: 1.2;
    font-size: 0.82rem;
    font-weight: 600;
    padding: 9px 12px;
    border-radius: var(--radius-sm);
    background: var(--accent-primary);
    color: #FFFFFF;
    border: 1px solid var(--accent-primary);
    text-align: center;
    transition: all 0.2s ease;
    cursor: pointer;
}

.btn-card-select:hover {
    background: var(--accent-hover);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
    color: #FFFFFF;
}

/* ========================================================
   SECCIÓN DE FORMULARIO DE SUSCRIPCIÓN & CALCULADORA
   ======================================================== */
.subscription-section {
    padding: 80px 0;
    background: radial-gradient(circle at 50% 100%, rgba(37, 99, 235, 0.12) 0%, rgba(15, 23, 42, 0) 70%);
}

.order-box {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: 36px;
}

@media (max-width: 576px) {
    .order-box {
        padding: 22px;
    }
}

.form-label-custom {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.form-control-custom {
    background: var(--bg-surface) !important;
    border: 1px solid var(--border-color) !important;
    color: var(--text-primary) !important;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    transition: all 0.2s ease;
}

.form-control-custom:focus {
    background: #1E293B !important;
    border-color: var(--accent-primary) !important;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.25) !important;
}

.form-control-custom::placeholder {
    color: var(--text-muted);
}

/* Checkbox de Servicios Estilizados */
.service-check-item {
    background: var(--bg-deep);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    transition: all 0.2s ease;
}

.service-check-item:hover {
    border-color: var(--border-highlight);
    background: #131C31;
}

.service-check-item.selected {
    border-color: var(--accent-primary);
    background: rgba(37, 99, 235, 0.08);
}

.service-check-left {
    display: flex;
    align-items: center;
    gap: 14px;
}

.service-checkbox {
    width: 20px;
    height: 20px;
    accent-color: var(--accent-primary);
    cursor: pointer;
}

.service-name {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.service-price-badge {
    font-family: var(--font-code);
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--semantic-success);
    background: rgba(16, 185, 129, 0.1);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    border: 1px solid rgba(16, 185, 129, 0.25);
    white-space: nowrap;
}

/* Resumen de Total */
.total-summary-card {
    background: #131C31;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 22px;
    text-align: center;
    margin: 24px 0;
}

.total-amount-display {
    font-family: var(--font-code);
    font-size: 2.2rem;
    font-weight: 800;
    color: #10B981;
    letter-spacing: -0.02em;
}

/* Botón de Envío Principal */
.btn-submit-order {
    background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);
    color: #FFFFFF;
    font-size: 1.05rem;
    font-weight: 700;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    border: none;
    width: 100%;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
    transition: all 0.25s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.btn-submit-order:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.5);
    color: #FFFFFF;
}

.btn-submit-order:disabled {
    opacity: 0.65;
    cursor: not-allowed;
}

/* ========================================================
   SECCIÓN OFICIAL DE PAGOS Y ALIAS
   ======================================================== */
.payment-section {
    padding: 60px 0;
    background: var(--bg-deep);
}

.payment-card {
    background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: hidden;
}

.payment-alias-badge {
    background: #0F172A;
    border: 2px dashed #3B82F6;
    border-radius: var(--radius-md);
    padding: 16px 24px;
    display: inline-flex;
    align-items: center;
    gap: 16px;
    margin: 15px 0;
}

.alias-number {
    font-family: var(--font-code);
    font-size: 1.7rem;
    font-weight: 800;
    color: #F8FAFC;
    letter-spacing: 0.05em;
}

.btn-copy-alias {
    background: #2563EB;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-copy-alias:hover {
    background: #1D4ED8;
}

.btn-copy-alias.copied {
    background: #10B981;
}

/* ========================================================
   WIDGET FLOTANTE DE WHATSAPP OFICIAL
   ======================================================== */
.whatsapp-float-btn {
    position: fixed;
    bottom: 28px;
    right: 28px;
    z-index: 9999;
    background: #25D366;
    color: #FFFFFF;
    border-radius: 50px;
    padding: 14px 22px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 0.95rem;
    text-decoration: none;
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.45);
    transition: all 0.25s ease;
}

.whatsapp-float-btn:hover {
    transform: translateY(-4px) scale(1.03);
    box-shadow: 0 10px 30px rgba(37, 211, 102, 0.6);
    color: #FFFFFF;
}

/* ========================================================
   FOOTER
   ======================================================== */
.footer-tracert {
    background: #0B1120;
    border-top: 1px solid var(--border-color);
    padding: 50px 0 30px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-brand img {
    height: 38px;
    margin-bottom: 12px;
}