/* style.css - Lex API MX
   Identidad: azul marino y dorado del logotipo; cuerpo sobrio en papel y tinta. */

:root {
    /* Superficies */
    --paper: #f6f5f1;
    --surface: #ffffff;
    --surface-muted: #f0eee8;
    --line: #dcd8ce;
    --line-strong: #b9b4a7;

    /* Tinta */
    --ink: #1b1d21;
    --ink-secondary: #4a4f57;
    --ink-muted: #6f747c;

    /* Marca (logotipo) */
    --brand-navy: #0b2442;
    --brand-navy-deep: #071a31;
    --brand-gold: #c8a35a;
    --brand-gold-text: #8a6a2c; /* dorado legible sobre fondo claro */

    /* Acento de interfaz: el azul marino de la marca */
    --accent: var(--brand-navy);
    --accent-hover: var(--brand-navy-deep);
    --accent-soft: #e6eaf0;

    /* Estados (apagados, sólo para significado) */
    --ok: #2f6b4f;
    --ok-soft: #e6efe9;
    --warn: #8a5a12;
    --warn-soft: #f6eedf;
    --danger: #9b2c2c;
    --danger-soft: #f6e4e2;

    --radius: 6px;
    --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
    --font-display: 'Montserrat', 'Inter', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;
    --transition-fast: 0.15s ease;
    --transition-normal: 0.2s ease;

    /* Alias heredados: app.js los usa en estilos en línea. */
    --color-bg-dark: var(--paper);
    --color-bg-card: var(--surface);
    --color-border: var(--line);
    --color-border-glow: var(--line-strong);
    --color-primary: var(--accent);
    --color-primary-glow: var(--accent-soft);
    --color-secondary: var(--accent);
    --color-secondary-glow: var(--accent-soft);
    --color-success: var(--ok);
    --color-success-glow: var(--ok-soft);
    --color-warning: var(--warn);
    --color-warning-glow: var(--warn-soft);
    --color-danger: var(--danger);
    --color-text-white: var(--ink);
    --color-text-gray: var(--ink-secondary);
    --color-text-muted: var(--ink-muted);
}

/* Global Reset */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
    background-color: var(--paper);
    color: var(--ink);
    min-height: 100vh;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    line-height: 1.5;
}

button, input, select, textarea {
    font-family: inherit;
}

a {
    color: var(--accent);
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

h1, h2, h3, h4, h5 {
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.01em;
}

code, pre {
    font-family: var(--font-mono);
}

/* Fondo decorativo retirado */
.glow-bg {
    display: none;
}

/* Panel base */
.glass {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
}

/* App Header & Navigation: barra de marca en azul marino */
.app-header {
    background: var(--brand-navy);
    border-bottom: 1px solid var(--brand-navy-deep);
    position: sticky;
    top: 0;
    z-index: 100;
}
.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 12px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}
.brand {
    display: flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
}
.brand-logo-svg {
    width: 52px;
    height: 26px;
    flex-shrink: 0;
    color: var(--brand-gold);
}
.brand-text {
    display: flex;
    flex-direction: column;
    gap: 1px;
}
.brand-header-row {
    display: flex;
    align-items: center;
    gap: 8px;
}
.brand-title {
    font-family: var(--font-display);
    font-size: 19px;
    font-weight: 600;
    letter-spacing: 0.01em;
    color: var(--brand-gold);
}
.brand-badge-version {
    font-family: var(--font-mono);
    font-size: 10px;
    padding: 1px 6px;
    border-radius: 3px;
    border: 1px solid rgba(255, 255, 255, 0.22);
    color: rgba(255, 255, 255, 0.65);
}
.brand-tagline {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.7);
}
.brand-tagline strong {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
}

.main-nav {
    display: flex;
    gap: 2px;
}
.nav-btn,
.nav-link-btn {
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: rgba(255, 255, 255, 0.75);
    padding: 8px 12px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 7px;
    text-decoration: none;
    transition: color var(--transition-fast), border-color var(--transition-fast);
}
.nav-btn i,
.nav-link-btn i {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
}
.nav-btn:hover,
.nav-link-btn:hover {
    color: #ffffff;
}
.nav-btn.active {
    color: #ffffff;
    border-bottom-color: var(--brand-gold);
}
.nav-btn.active i {
    color: var(--brand-gold);
}
.app-header :focus-visible {
    outline-color: var(--brand-gold);
}

/* API Status indicator */
.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.75);
    white-space: nowrap;
}
.pulse-dot {
    width: 7px;
    height: 7px;
    background-color: #d9a441;
    border-radius: 50%;
    display: inline-block;
}
.pulse-dot.online {
    background-color: #5fb88a;
}
.pulse-dot.offline {
    background-color: #e07a72;
}

/* App Main Content */
.app-content {
    flex: 1;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 32px 24px;
}

.api-connection {
    margin-bottom: 32px;
    padding: 14px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.api-connection-copy {
    display: flex;
    flex-direction: column;
    gap: 3px;
    color: var(--ink-secondary);
    font-size: 12px;
    line-height: 1.45;
}
.api-connection-copy strong {
    color: var(--ink);
    font-size: 13px;
    font-weight: 600;
}
.api-connection-copy code {
    color: var(--ink);
    font-size: 11px;
}
.api-connection-eyebrow,
.billing-eyebrow {
    color: var(--ink-muted);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.api-connection-actions {
    min-width: min(100%, 520px);
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 5px;
}
.api-key-control,
.billing-key-control {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 4px 4px 12px;
    background: var(--surface);
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
}
.api-key-control:focus-within,
.billing-key-control:focus-within {
    border-color: var(--accent);
}
.api-key-control i,
.billing-key-control i {
    color: var(--ink-muted);
}
.api-key-control input,
.billing-key-control input {
    min-width: 0;
    flex: 1;
    padding: 8px 0;
    background: transparent;
    border: 0;
    outline: 0;
    color: var(--ink);
    font-family: var(--font-mono);
    font-size: 12px;
}
.api-key-feedback {
    color: var(--ink-muted);
    font-size: 11px;
}
.api-key-feedback.success {
    color: var(--ok);
}
.api-key-feedback.error {
    color: var(--danger);
}

.content-section {
    display: none;
}
.content-section.active {
    display: block;
}

/* SECTION 1: INICIO (HERO) */
.hero-container {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
    gap: 48px;
    margin-bottom: 48px;
}
.hero-text {
    display: flex;
    flex-direction: column;
    gap: 18px;
}
.hero-headline {
    font-size: 40px;
    line-height: 1.18;
    text-wrap: balance;
    font-weight: 600;
    letter-spacing: -0.015em;
}
.hero-text::before {
    content: "";
    width: 48px;
    height: 3px;
    background: var(--brand-gold);
}
.gradient-text {
    color: var(--accent);
}
.hero-lead {
    font-family: var(--font-display);
    font-size: 24px;
    line-height: 1.3;
    font-weight: 500;
    color: var(--accent);
    max-width: 36ch;
    margin-top: -6px;
    text-wrap: balance;
}
.hero-subheadline {
    font-size: 17px;
    line-height: 1.6;
    color: var(--ink-secondary);
    max-width: 58ch;
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.commerce-actions {
    margin-top: 6px;
}
.btn.commerce-link {
    text-decoration: none;
}
.commerce-link[hidden],
.commerce-actions:not(:has(.commerce-link:not([hidden]))),
[hidden] {
    display: none !important;
}
.commerce-note {
    font-size: 13px;
    line-height: 1.55;
    color: var(--ink-secondary);
}
.commerce-note a {
    color: var(--accent);
}
.explain-commerce {
    margin-bottom: 16px;
}

/* MCP onboarding */
.mcp-onboarding {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 32px;
    padding: 28px;
    margin-top: 32px;
    align-items: center;
}
.mcp-onboarding-text {
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.mcp-onboarding h2 {
    font-size: 22px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.mcp-onboarding h2 i {
    font-size: 16px;
    color: var(--ink-muted);
}
.mcp-steps {
    padding-left: 20px;
    color: var(--ink-secondary);
    font-size: 14px;
    line-height: 1.7;
}
.mcp-steps strong {
    color: var(--ink);
    font-weight: 600;
}
.mcp-steps code {
    font-size: 12px;
    color: var(--ink);
}
.mcp-config {
    margin: 0;
    padding: 18px;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    background: var(--surface-muted);
    color: var(--ink);
    font-size: 12px;
    line-height: 1.6;
    overflow-x: auto;
}

/* Secuencia del motor */
.flow-card {
    padding: 24px;
}
.flow-title {
    font-size: 17px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.flow-title i {
    font-size: 14px;
    color: var(--ink-muted);
}
.flow-steps {
    display: flex;
    flex-direction: column;
}
.flow-step {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 0;
    border-bottom: 1px solid var(--line);
}
.flow-step:last-child {
    border-bottom: none;
}
.flow-step.highlight .step-name {
    color: var(--accent);
}
.step-num {
    width: 22px;
    height: 22px;
    border: 1px solid var(--line-strong);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 600;
    color: var(--ink-secondary);
    flex-shrink: 0;
}
.flow-step.highlight .step-num {
    border-color: var(--accent);
    background: var(--accent);
    color: var(--surface);
}
.step-details {
    display: flex;
    flex-direction: column;
}
.step-name {
    font-size: 13px;
    font-weight: 600;
}
.step-desc {
    font-size: 12px;
    color: var(--ink-muted);
}
.flow-connector {
    display: none;
}

/* Cifras */
.trust-ribbon {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    border-top: 2px solid var(--brand-gold);
    border-bottom: 1px solid var(--line);
    margin-bottom: 40px;
}
.trust-metric-card {
    background: transparent;
    border: none;
    border-radius: 0;
    padding: 20px 20px 20px 0;
    display: flex;
    align-items: flex-start;
}
.trust-metric-card + .trust-metric-card {
    border-left: 1px solid var(--line);
    padding-left: 20px;
}
.trust-metric-icon {
    display: none;
}
.trust-metric-data {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.trust-metric-number {
    font-family: var(--font-display);
    font-size: 26px;
    font-weight: 600;
    color: var(--ink);
}
.trust-metric-label {
    font-size: 12px;
    color: var(--ink-secondary);
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}
.feature-card {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.feature-icon {
    font-size: 18px;
    color: var(--ink-muted);
}
.feature-card h3 {
    font-size: 18px;
}
.feature-card p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--ink-secondary);
}

/* Encabezados de sección */
.section-header {
    margin-bottom: 24px;
}
.section-header h2 {
    font-size: 26px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.section-header h2 i {
    font-size: 18px;
    color: var(--ink-muted);
}
.section-header p {
    font-size: 14px;
    color: var(--ink-secondary);
    margin-top: 6px;
    max-width: 75ch;
}

/* Sugerencias */
.case-suggestions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
}
.suggestion-label {
    font-size: 12px;
    color: var(--ink-muted);
    font-weight: 500;
}
.tag-pill {
    background: var(--surface);
    border: 1px solid var(--line);
    color: var(--ink-secondary);
    padding: 5px 12px;
    border-radius: 999px;
    font-size: 12px;
    cursor: pointer;
    transition: border-color var(--transition-fast), color var(--transition-fast);
}
.tag-pill:hover {
    color: var(--accent);
    border-color: var(--accent);
}

/* Búsqueda */
.search-console {
    padding: 20px;
    margin-bottom: 24px;
}
.search-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.input-group {
    display: flex;
    background: var(--surface);
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
    padding: 4px 4px 4px 12px;
    align-items: center;
}
.input-group:focus-within {
    border-color: var(--accent);
}
.input-icon {
    font-size: 14px;
    color: var(--ink-muted);
    margin-right: 10px;
}
.input-group input {
    flex: 1;
    min-width: 0;
    background: transparent;
    border: none;
    color: var(--ink);
    padding: 9px 0;
    font-size: 14px;
    outline: none;
}
.input-group input::placeholder {
    color: var(--ink-muted);
}
.form-row {
    display: flex;
    gap: 20px;
}
.form-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.form-group label {
    font-size: 12px;
    font-weight: 600;
    color: var(--ink-secondary);
}
.form-group select,
.form-group input[type="date"],
.form-group input[type="text"],
.form-group input[type="number"],
.form-group select.form-control,
.form-control {
    background: var(--surface);
    border: 1px solid var(--line-strong);
    padding: 9px 12px;
    border-radius: var(--radius);
    color: var(--ink);
    font-size: 13px;
    outline: none;
}
.form-group select:focus,
.form-group input[type="date"]:focus,
.form-group input[type="text"]:focus,
.form-group input[type="number"]:focus,
.form-control:focus {
    border-color: var(--accent);
}

/* Paneles de resultados */
.rag-visualizer-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}
.visualizer-panel {
    display: flex;
    flex-direction: column;
    height: 400px;
}
.panel-header {
    padding: 14px 18px;
    border-bottom: 1px solid var(--line);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}
.panel-header h3 {
    font-size: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.panel-header h3 i {
    font-size: 13px;
    color: var(--ink-muted);
}
.badge {
    background: var(--surface-muted);
    color: var(--ink-secondary);
    font-size: 11px;
    padding: 1px 8px;
    border-radius: 999px;
    font-weight: 600;
    border: 1px solid var(--line);
}
.panel-body {
    flex: 1;
    padding: 18px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.panel-item-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 12px 14px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.panel-item-card:hover {
    border-color: var(--line-strong);
}
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
}
.card-title {
    font-size: 13px;
    font-weight: 600;
}
.card-subtitle {
    font-size: 11px;
    color: var(--ink-muted);
}
.card-content-snippet {
    font-size: 12px;
    color: var(--ink-secondary);
    line-height: 1.5;
    white-space: pre-wrap;
}

.action-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-left: 3px solid var(--accent);
    border-radius: var(--radius);
    margin-top: 10px;
}
.action-footer p {
    font-size: 14px;
    color: var(--ink-secondary);
}

/* Botones */
.btn {
    border: 1px solid transparent;
    border-radius: var(--radius);
    padding: 9px 18px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    line-height: 1.3;
    transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}
.btn-primary {
    background-color: var(--accent);
    color: #ffffff;
}
.btn-primary:hover {
    background-color: var(--accent-hover);
}
.btn-secondary {
    background-color: var(--surface);
    color: var(--ink);
    border-color: var(--line-strong);
}
.btn-secondary:hover {
    border-color: var(--ink-secondary);
}
/* La acción principal comparte el acento: un solo color de énfasis. */
.btn-success {
    background-color: var(--accent);
    color: #ffffff;
}
.btn-success:hover {
    background-color: var(--accent-hover);
}
.btn-lg {
    padding: 11px 24px;
    font-size: 15px;
}
.btn-icon {
    background: var(--surface);
    border: 1px solid var(--line);
    color: var(--ink-secondary);
    width: 32px;
    height: 32px;
    border-radius: var(--radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}
.btn-icon:hover {
    color: var(--ink);
    border-color: var(--line-strong);
}
.w-full {
    width: 100%;
}

/* SECTION 3: PLAYGROUND API */
.playground-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 20px;
    align-items: stretch;
}
.play-controls {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.dynamic-inputs {
    display: flex;
    flex-direction: column;
    gap: 14px;
    border-top: 1px solid var(--line);
    padding-top: 16px;
}
.play-response {
    display: flex;
    flex-direction: column;
    height: 520px;
    overflow: hidden;
}
.block-code {
    flex: 1;
    background: var(--surface-muted);
    padding: 18px;
    overflow: auto;
    font-size: 12px;
}
.block-code pre,
.block-code code {
    color: var(--ink);
}
.badge-status {
    font-size: 11px;
    background: var(--surface-muted);
    border: 1px solid var(--line);
    color: var(--ink-secondary);
    padding: 2px 8px;
    border-radius: 3px;
}
.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* SECTION 4: EXPLICACIÓN */
.explanation-layout {
    display: grid;
    grid-template-columns: 0.7fr 1.3fr;
    gap: 20px;
    align-items: stretch;
}
.profile-tabs {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.profile-tab {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 14px 16px;
    cursor: pointer;
    text-align: left;
    color: var(--ink);
    display: flex;
    align-items: center;
    gap: 14px;
    transition: border-color var(--transition-fast);
}
.profile-tab:hover {
    border-color: var(--line-strong);
}
.profile-tab.active {
    border-color: var(--accent);
    box-shadow: inset 3px 0 0 var(--accent);
}
.profile-tab i {
    font-size: 16px;
    color: var(--ink-muted);
}
.profile-tab.active i {
    color: var(--accent);
}
.tab-info {
    display: flex;
    flex-direction: column;
}
.tab-title {
    font-size: 14px;
    font-weight: 600;
}
.tab-sub {
    font-size: 12px;
    color: var(--ink-muted);
    margin-top: 2px;
}

.explanation-display {
    padding: 28px;
    position: relative;
    min-height: 400px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}
.placeholder-text {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 12px;
    color: var(--ink-muted);
    font-size: 14px;
    flex: 1;
}
.placeholder-icon {
    font-size: 28px;
    color: var(--line-strong);
}

/* Avisos */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    font-size: 13px;
    line-height: 1.5;
}
.alert-icon {
    font-size: 14px;
    margin-top: 2px;
}
.alert-body {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.alert-caution {
    background: var(--warn-soft);
    border: 1px solid #e3d2b0;
    color: var(--warn);
}
.alert-warning {
    background: var(--accent-soft);
    border: 1px solid #c8d2df;
    color: var(--accent);
}

.summary-card {
    background: var(--surface-muted);
    border: 1px solid var(--line);
    padding: 14px 16px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.summary-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--ink);
    display: flex;
    align-items: center;
    gap: 6px;
}
.summary-card p {
    font-size: 13px;
    line-height: 1.55;
    color: var(--ink-secondary);
}

.explanation-text-body {
    font-size: 15px;
    line-height: 1.7;
    color: var(--ink);
    margin-bottom: 24px;
    white-space: pre-wrap;
}
.explanation-text-body h3 {
    font-size: 17px;
    margin: 16px 0 8px 0;
}
.explanation-text-body ul,
.explanation-text-body ol {
    margin-left: 20px;
    margin-bottom: 12px;
}
.explanation-text-body li {
    margin-bottom: 4px;
}

.next-steps-block {
    border-top: 1px solid var(--line);
    padding-top: 18px;
}
.next-steps-block h4 {
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 10px;
}
.next-steps-block ul {
    list-style-type: none;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.next-steps-block li {
    font-size: 13px;
    color: var(--ink-secondary);
    display: flex;
    align-items: baseline;
    gap: 8px;
}
.next-steps-block li::before {
    content: "—";
    color: var(--ink-muted);
}

/* Carga */
.loader-overlay {
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.92);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    z-index: 10;
    text-align: center;
    padding: 20px;
    color: var(--ink-secondary);
}
.spinner {
    width: 28px;
    height: 28px;
    border: 2px solid var(--line);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* SECTION 5: TRAZABILIDAD */
.trazabilidad-container {
    padding: 40px;
}
.trazabilidad-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}
.trace-card {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.trace-meta {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    font-size: 12px;
    color: var(--ink-muted);
}
.trace-norm-badge {
    color: var(--accent);
    font-weight: 600;
}
.trace-article-title {
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 600;
}
.trace-text {
    font-size: 13px;
    line-height: 1.6;
    color: var(--ink-secondary);
    background: var(--surface-muted);
    padding: 12px 14px;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    white-space: pre-wrap;
    max-height: 180px;
    overflow-y: auto;
}
.trace-source {
    font-size: 11px;
    color: var(--ink-muted);
    text-align: right;
    font-family: var(--font-mono);
    word-break: break-all;
}

/* SECTION 6: CONSUMO Y SALDO */
.billing-section-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
}
.billing-access {
    padding: 18px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 12px;
}
.billing-access-copy {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 13px;
    color: var(--ink-secondary);
}
.billing-access-copy strong {
    color: var(--ink);
    font-size: 14px;
}
.billing-access-copy code {
    color: var(--ink);
    font-size: 12px;
}
.billing-key-control {
    min-width: 390px;
    width: auto;
}
.billing-feedback {
    min-height: 28px;
    padding: 4px 2px 12px;
    color: var(--ink-muted);
    font-size: 12px;
}
.billing-feedback.success {
    color: var(--ok);
}
.billing-feedback.error {
    color: var(--danger);
}
.billing-feedback.loading {
    color: var(--ink-secondary);
}
.billing-metrics {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 18px;
}
.billing-metrics.is-loading {
    opacity: 0.55;
}
.billing-metric {
    position: relative;
    min-height: 130px;
    padding: 18px 20px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.billing-metric-icon {
    position: absolute;
    right: 18px;
    top: 18px;
    color: var(--ink-muted);
    font-size: 14px;
}
.billing-metric-label {
    color: var(--ink-muted);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.billing-metric-value {
    max-width: calc(100% - 30px);
    margin-top: 8px;
    color: var(--ink);
    font-family: var(--font-display);
    font-size: 26px;
    font-weight: 600;
    line-height: 1.15;
}
.billing-metric-meta {
    color: var(--ink-secondary);
    font-size: 12px;
}
.billing-alert {
    padding: 12px 16px;
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-color: #e3d2b0;
    background: var(--warn-soft);
    color: var(--warn);
}
.billing-alert > i {
    color: var(--warn);
    font-size: 16px;
}
.billing-alert div {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.billing-alert span {
    color: var(--ink-secondary);
    font-size: 12px;
}
.billing-grid {
    display: grid;
    grid-template-columns: 0.85fr 1.15fr;
    gap: 18px;
    margin-bottom: 28px;
}
.billing-panel {
    min-height: 330px;
    overflow: hidden;
}
.billing-terms,
.billing-ledger {
    padding: 4px 20px 16px;
}
.billing-term-row {
    padding: 12px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    border-bottom: 1px solid var(--line);
    font-size: 13px;
}
.billing-term-row:last-child {
    border-bottom: none;
}
.billing-term-row span {
    color: var(--ink-secondary);
}
.billing-term-row strong {
    text-align: right;
    color: var(--ink);
    font-weight: 600;
}
.billing-ledger-row {
    min-height: 60px;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--line);
}
.billing-ledger-row:last-child {
    border-bottom: none;
}
.billing-ledger-icon {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 11px;
    border: 1px solid var(--line);
}
.billing-ledger-icon.positive {
    color: var(--ok);
}
.billing-ledger-icon.negative {
    color: var(--ink-secondary);
}
.billing-ledger-copy,
.billing-ledger-amount {
    display: flex;
    flex-direction: column;
    gap: 3px;
}
.billing-ledger-copy strong {
    font-size: 13px;
    font-weight: 600;
}
.billing-ledger-copy span,
.billing-ledger-amount span {
    color: var(--ink-muted);
    font-size: 11px;
}
.billing-ledger-amount {
    text-align: right;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 500;
}
.billing-ledger-amount.positive {
    color: var(--ok);
}
.billing-ledger-amount.negative {
    color: var(--ink);
}
.billing-empty-state {
    min-height: 185px;
    padding: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    text-align: center;
    color: var(--ink-muted);
}
.billing-empty-state i {
    color: var(--line-strong);
    font-size: 22px;
}
.billing-empty-state p {
    max-width: 320px;
    font-size: 13px;
    line-height: 1.5;
}
.billing-subheader {
    margin-bottom: 16px;
}
.billing-subheader h2 {
    font-size: 20px;
}
.billing-offer-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}
.billing-offer-card {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.billing-offer-icon {
    color: var(--ink-muted);
    font-size: 15px;
}
.billing-offer-title,
.billing-offer-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}
.billing-offer-title strong {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 600;
}
.billing-offer-card p {
    min-height: 38px;
    color: var(--ink-secondary);
    font-size: 13px;
    line-height: 1.5;
}
.billing-offer-footer {
    padding-top: 12px;
    border-top: 1px solid var(--line);
    color: var(--ink-muted);
    font-family: var(--font-mono);
    font-size: 11px;
}

/* App Footer */
.app-footer {
    background: var(--surface);
    border-top: 2px solid var(--brand-gold);
    padding: 20px 24px;
    margin-top: 48px;
}
.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    font-size: 12px;
    color: var(--ink-muted);
}
.footer-brand-col {
    display: flex;
    flex-direction: column;
    gap: 6px;
    max-width: 550px;
}
.footer-desc {
    font-size: 12px;
    line-height: 1.5;
    color: var(--ink-muted);
}
.footer-desc strong {
    color: var(--ink-secondary);
    font-family: var(--font-mono);
    font-weight: 500;
}
.footer-links {
    display: flex;
    align-items: center;
    gap: 12px;
}
.footer-links a {
    color: var(--ink-secondary);
    text-decoration: none;
}
.footer-links a:hover {
    color: var(--accent);
    text-decoration: underline;
}
.sep {
    color: var(--line-strong);
}
.glow-indicator {
    width: 6px;
    height: 6px;
    background-color: var(--ok);
    border-radius: 50%;
}

/* Sin animaciones decorativas */
.animate-slide-up {
    animation: none;
}

/* RESPONSIVENESS */
@media (max-width: 992px) {
    .api-connection {
        align-items: stretch;
        flex-direction: column;
        gap: 12px;
    }
    .api-connection-actions {
        min-width: 0;
        align-items: flex-start;
    }
    .hero-container,
    .playground-grid,
    .explanation-layout,
    .rag-visualizer-grid,
    .trazabilidad-grid,
    .billing-grid,
    .billing-offer-grid,
    .features-grid,
    .mcp-onboarding {
        grid-template-columns: minmax(0, 1fr);
    }
    .hero-container {
        gap: 32px;
    }
    .trust-ribbon,
    .billing-metrics {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .trust-metric-card:nth-child(3) {
        border-left: none;
        padding-left: 0;
    }
    .trust-metric-card:nth-child(n + 3) {
        border-top: 1px solid var(--line);
    }
    .billing-access {
        align-items: stretch;
        flex-direction: column;
    }
    .billing-key-control {
        min-width: 0;
        width: 100%;
    }
    .nav-container {
        flex-direction: column;
        align-items: flex-start;
    }
    .main-nav {
        flex-wrap: wrap;
        width: 100%;
    }
}

@media (max-width: 620px) {
    .app-header {
        position: static;
    }
    .app-content {
        padding: 24px 16px;
    }
    .nav-container {
        padding: 12px 16px;
    }
    .hero-headline {
        font-size: 30px;
    }
    .hero-lead {
        font-size: 20px;
    }
    .form-row {
        flex-direction: column;
        gap: 14px;
    }
    .billing-section-header {
        align-items: flex-start;
        flex-direction: column;
    }
    .billing-metrics {
        grid-template-columns: minmax(0, 1fr);
    }
    .billing-key-control,
    .api-key-control {
        align-items: stretch;
        flex-wrap: wrap;
    }
    .billing-key-control input,
    .api-key-control input {
        min-height: 36px;
    }
    .billing-key-control .btn {
        width: 100%;
    }
    .api-key-control .btn {
        flex: 1 1 calc(50% - 4px);
    }
    .mcp-onboarding {
        padding: 20px;
    }
    .trazabilidad-container {
        padding: 24px;
    }
    .footer-container {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* PWA & Offline Styles */
.offline-indicator {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
    padding: 10px 16px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--warn);
    border: 1px solid #e3d2b0;
    background: var(--warn-soft);
}

.pwa-update-toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    padding: 10px 16px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
    border: 1px solid var(--line-strong);
    background: var(--surface);
    color: var(--ink);
}

.pwa-update-toast button {
    background: var(--accent);
    color: #ffffff;
    border: none;
    padding: 6px 12px;
    border-radius: var(--radius);
    font-weight: 500;
    font-size: 12px;
    cursor: pointer;
}

.pwa-update-toast button:hover {
    background: var(--accent-hover);
}

.pwa-install-btn {
    margin-left: 16px;
    padding: 7px 14px;
    font-size: 12px;
    white-space: nowrap;
}

@media (max-width: 620px) {
    .pwa-install-btn {
        margin-left: 0;
        margin-top: 8px;
        width: 100%;
    }
    .offline-indicator {
        left: 16px;
        right: 16px;
        justify-content: center;
    }
    .pwa-update-toast {
        left: 16px;
        right: 16px;
        transform: none;
        justify-content: center;
    }
}

body.offline-mode .pulse-dot {
    background-color: var(--warn) !important;
}

.cached-offline {
    position: relative;
}

.cached-offline::after {
    content: '';
    position: absolute;
    top: 8px;
    right: 8px;
    width: 7px;
    height: 7px;
    background: var(--ok);
    border-radius: 50%;
}

.not-cached-offline {
    opacity: 0.5;
    position: relative;
}

/* La marca en el pie va sobre fondo claro: azul marino en lugar de dorado. */
.app-footer .brand-title {
    color: var(--brand-navy);
}
.app-footer .brand-badge-version {
    border-color: var(--line);
    color: var(--ink-muted);
}

/* Clave de API dentro del Playground */
#sec-playground .api-connection {
    margin-bottom: 20px;
}

/* Lista de normas incluidas */
.norms-list {
    margin-top: 24px;
    padding: 0;
}
.norms-list summary {
    cursor: pointer;
    padding: 16px 20px;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 15px;
    color: var(--ink);
}
.norms-list summary:hover {
    color: var(--accent);
}
.norms-groups {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px 32px;
    padding: 4px 20px 20px;
    border-top: 1px solid var(--line);
}
.norms-group h4 {
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--ink-secondary);
    margin: 16px 0 8px;
}
.norms-group h4 span {
    color: var(--ink-muted);
    font-weight: 500;
}
.norms-group ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.norms-group li {
    font-size: 13px;
    line-height: 1.45;
    color: var(--ink-secondary);
}
.norms-group abbr {
    display: inline-block;
    min-width: 64px;
    margin-right: 6px;
    font-family: var(--font-mono);
    font-size: 11px;
    text-decoration: none;
    color: var(--ink);
}
.trust-metric-label a {
    color: var(--accent);
}

/* Precios */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 16px;
}
.pricing-card {
    padding: 22px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.pricing-card h3 {
    font-size: 17px;
}
.pricing-amount {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 600;
    color: var(--accent);
}
.pricing-card p:not(.pricing-amount) {
    font-size: 13px;
    line-height: 1.55;
    color: var(--ink-secondary);
    flex: 1;
}
.pricing-card .btn {
    align-self: flex-start;
    text-decoration: none;
}
.pricing-table {
    margin-bottom: 40px;
    overflow-x: auto;
}
.pricing-table table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}
.pricing-table th,
.pricing-table td {
    text-align: left;
    padding: 12px 18px;
    border-bottom: 1px solid var(--line);
    color: var(--ink-secondary);
}
.pricing-table th {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--ink-muted);
}
.pricing-table td:first-child {
    color: var(--ink);
    font-weight: 600;
}
.pricing-table th:last-child,
.pricing-table td:last-child {
    text-align: right;
    font-family: var(--font-mono);
    color: var(--ink);
}
.pricing-table tr:last-child td {
    border-bottom: none;
}
.billing-account-header {
    border-top: 1px solid var(--line);
    padding-top: 28px;
}

/* Aviso legal del pie */
.footer-legal strong {
    font-family: var(--font-sans);
    font-weight: 600;
}
.footer-brand-col {
    gap: 8px;
}

@media (max-width: 992px) {
    .pricing-grid,
    .norms-groups {
        grid-template-columns: minmax(0, 1fr);
    }
}