/*
 * Achira Glass Design System
 * Glassmorphism + Inter + Deep Blue/Violet
 * Versión 2.0 — Rediseño profesional
 */

/* ===========================================================
   1. DESIGN TOKENS (CSS Variables)
   =========================================================== */

:root {
  /* --- Surface / Background --- */
  --bg-deep: #0b1326;
  --bg-midnight: #141f3d;
  --bg-violet: #1a1040;
  --surface-dim: #0a1122;
  --surface-container: #141f3d;
  --surface-container-high: #1a284a;
  --surface-container-highest: #253358;

  /* --- Glass Surfaces --- */
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-bg-standard: rgba(255, 255, 255, 0.08);
  --glass-bg-elevated: rgba(255, 255, 255, 0.12);
  --glass-bg-hover: rgba(255, 255, 255, 0.14);
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-border-elevated: rgba(255, 255, 255, 0.2);
  --glass-border-focus: rgba(255, 255, 255, 0.3);
  --glass-blur: 20px;
  --glass-blur-elevated: 40px;

  /* --- Brand Colors --- */
  /* Alias mínimo (F8): --brand-orange ahora apunta al oro del nuevo design system.
     Los HTMLs nuevos (landing.html, admin.html) usan --gold directamente y ganan en
     cascada con su <style> inline. Este cambio evita que estilos viejos que aún
     referencien --brand-orange muestren el naranja #FF6B35. */
  --brand-orange: #D1BF84;
  --brand-orange-hover: #C3AC67;
  --brand-orange-dim: rgba(209, 191, 132, .15);
  --brand-orange-hover: #e85d2e;
  --brand-orange-dim: rgba(255, 107, 53, 0.15);
  --brand-whatsapp: #25D366;
  --brand-whatsapp-hover: #1fa855;
  --brand-success: #4caf50;
  --brand-error: #f44336;
  --brand-error-dim: rgba(244, 67, 54, 0.15);

  /* --- Text --- */
  --text-primary: #dae2fd;
  --text-secondary: #b0b8d1;
  --text-tertiary: #6e7593;
  --text-inverse: #1a1c1c;

  /* --- Interactive --- */
  --outline: #6e7593;
  --outline-variant: #3d4466;

  /* --- Spacing (8px grid) --- */
  --space-unit: 8px;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 40px;
  --space-3xl: 64px;
  --space-4xl: 80px;

  /* --- Radius --- */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* --- Shadows --- */
  --shadow-glass-sm: 0 4px 16px rgba(0, 0, 0, 0.15);
  --shadow-glass-md: 0 8px 32px rgba(0, 0, 0, 0.2);
  --shadow-glass-lg: 0 16px 48px rgba(0, 0, 0, 0.25);
  --shadow-button: 0 4px 12px rgba(255, 107, 53, 0.3);

  /* --- Typography --- */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display-lg: 700 84px/90px var(--font-family);
  --font-headline-lg: 600 32px/40px var(--font-family);
  --font-headline-md: 500 24px/32px var(--font-family);
  --font-body-lg: 400 18px/28px var(--font-family);
  --font-body-md: 400 16px/24px var(--font-family);
  --font-body-sm: 400 14px/20px var(--font-family);
  --font-label-sm: 600 12px/16px var(--font-family);

  /* --- Transitions --- */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* --- Layout --- */
  --container-max: 1200px;
  --header-height: 72px;
}

/* ===========================================================
   2. RESET & BASE
   =========================================================== */

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font: var(--font-body-md);
  color: var(--text-primary);
  background: var(--bg-deep);
  background-image:
    radial-gradient(ellipse 80% 60% at 50% -20%, rgba(120, 80, 200, 0.25), transparent),
    radial-gradient(ellipse 60% 50% at 80% 50%, rgba(40, 60, 140, 0.2), transparent),
    radial-gradient(ellipse 50% 40% at 20% 80%, rgba(100, 60, 160, 0.15), transparent);
  background-attachment: fixed;
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

a:hover {
  color: var(--brand-orange);
}

/* ===========================================================
   3. ACCESSIBILITY
   =========================================================== */

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  z-index: 10000;
  padding: var(--space-sm) var(--space-md);
  background: var(--brand-orange);
  color: #fff;
  font: var(--font-label-sm);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-sm);
}

/* Focus visible */
:focus {
  outline: none;
}

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

/* Visually hidden (screen-reader only) */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ===========================================================
   4. LAYOUT
   =========================================================== */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section {
  padding: var(--space-3xl) 0;
}

/* ===========================================================
   5. HEADER (Glass)
   =========================================================== */

.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(11, 19, 38, 0.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo h1 {
  font: var(--font-headline-lg);
  font-size: 22px;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.logo h1 span {
  color: var(--brand-orange);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav a {
  font: var(--font-body-sm);
  font-weight: 500;
  color: var(--text-secondary);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav a:hover,
.nav a.active {
  color: var(--text-primary);
  background: var(--glass-bg);
}

.nav a[aria-current="page"] {
  color: var(--brand-orange);
}

/* ===========================================================
   6. HERO
   =========================================================== */

.hero {
  padding: var(--space-4xl) 0;
  text-align: center;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 40%, rgba(255, 107, 53, 0.08), transparent);
  pointer-events: none;
}

.hero h2 {
  font: var(--font-headline-lg);
  font-size: clamp(36px, 6vw, 60px);
  margin-bottom: var(--space-md);
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.hero p {
  font: var(--font-body-lg);
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ===========================================================
   7. FEATURES GRID
   =========================================================== */

.features {
  padding: var(--space-3xl) 0;
}

.section-title {
  font: var(--font-headline-md);
  color: var(--text-primary);
  text-align: center;
  margin-bottom: var(--space-xl);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.feature-card {
  background: var(--glass-bg-standard);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  text-align: center;
  box-shadow: var(--shadow-glass-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glass-md);
  border-color: var(--glass-border-elevated);
}

.feature-card h3 {
  font: var(--font-headline-md);
  font-size: 20px;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.feature-card p {
  font: var(--font-body-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

/* ===========================================================
   8. BUTTONS
   =========================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 28px;
  border-radius: var(--radius-2xl);
  font: var(--font-label-sm);
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  min-height: 48px;
  min-width: 48px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-primary {
  background: var(--brand-orange);
  color: #ffffff;
  box-shadow: var(--shadow-button);
}

.btn-primary:hover {
  background: var(--brand-orange-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-whatsapp {
  background: var(--brand-whatsapp);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.3);
}

.btn-whatsapp:hover {
  background: var(--brand-whatsapp-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
}

.btn-secondary {
  background: var(--glass-bg-standard);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(var(--glass-blur));
}

.btn-secondary:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-elevated);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid transparent;
}

.btn-ghost:hover {
  color: var(--text-primary);
  background: var(--glass-bg);
  border-color: var(--glass-border);
}

.btn-block {
  width: 100%;
}

/* ===========================================================
   9. FORMS (Glass inputs)
   =========================================================== */

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font: var(--font-label-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-group .hint {
  font: var(--font-body-sm);
  color: var(--text-tertiary);
  margin-top: var(--space-xs);
}

.form-group .required-indicator {
  color: var(--brand-orange);
  margin-left: 2px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  color: var(--text-primary);
  font: var(--font-body-md);
  transition: border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-tertiary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--brand-orange);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 3px var(--brand-orange-dim);
}

.form-group input[aria-invalid="true"],
.form-group textarea[aria-invalid="true"],
.form-group select[aria-invalid="true"] {
  border-color: var(--brand-error);
  box-shadow: 0 0 0 3px var(--brand-error-dim);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='%236e7593'%3E%3Cpath d='M1.41 0L6 4.58 10.59 0 12 1.41l-6 6-6-6z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

/* Checkboxes */
.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  background: var(--glass-bg-standard);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.checkbox-label:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-elevated);
}

.checkbox-label:has(input:checked) {
  border-color: var(--brand-orange);
  background: var(--brand-orange-dim);
}

.checkbox-label input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--brand-orange);
  flex-shrink: 0;
}

.checkbox-label .checkbox-text {
  display: flex;
  flex-direction: column;
}

.checkbox-label .checkbox-title {
  font: var(--font-body-sm);
  font-weight: 500;
  color: var(--text-primary);
}

.checkbox-label .checkbox-desc {
  font: var(--font-body-sm);
  font-size: 12px;
  color: var(--text-tertiary);
}

/* Character counter */
.char-counter {
  text-align: right;
  font: var(--font-body-sm);
  font-size: 12px;
  color: var(--text-tertiary);
  margin-top: var(--space-xs);
}

.char-counter.warning {
  color: var(--brand-orange);
}

.char-counter.danger {
  color: var(--brand-error);
}

/* ===========================================================
   10. PREVIEW CARD
   =========================================================== */

.preview-card {
  background: var(--glass-bg-standard);
  backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  margin-top: var(--space-lg);
  transition: all var(--transition-base);
}

.preview-card.empty {
  opacity: 0.4;
  border-style: dashed;
}

.preview-card .preview-header {
  font: var(--font-label-sm);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-md);
}

.preview-card .preview-body {
  font: var(--font-body-md);
  color: var(--text-primary);
  white-space: pre-wrap;
  word-break: break-word;
}

.preview-card .preview-image {
  width: 100%;
  max-height: 300px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-top: var(--space-md);
}

.preview-card .preview-meta {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-md);
  font: var(--font-body-sm);
  font-size: 12px;
  color: var(--text-tertiary);
}

.preview-channels {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

.preview-channel-badge {
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font: var(--font-label-sm);
  font-size: 10px;
  background: var(--glass-bg-standard);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
}

.preview-channel-badge.facebook { border-color: #1877F2; color: #1877F2; }
.preview-channel-badge.instagram { border-color: #E1306C; color: #E1306C; }

/* ===========================================================
   11. RESULTS (individual channel feedback)
   =========================================================== */

.publish-results {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.result-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  font: var(--font-body-sm);
  background: var(--glass-bg-standard);
  border: 1px solid var(--glass-border);
}

.result-item.success {
  border-color: var(--brand-success);
  background: rgba(76, 175, 80, 0.1);
}

.result-item.error {
  border-color: var(--brand-error);
  background: var(--brand-error-dim);
}

.result-item .result-icon {
  flex-shrink: 0;
  font-size: 18px;
}

.result-item .result-channel {
  font-weight: 600;
}

.result-item .result-message {
  color: var(--text-secondary);
}

/* ===========================================================
   12. TABLES
   =========================================================== */

.table-container {
  overflow-x: auto;
  margin: var(--space-lg) 0;
  border-radius: var(--radius-xl);
  border: 1px solid var(--glass-border);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--glass-bg-standard);
  backdrop-filter: blur(var(--glass-blur));
}

th, td {
  padding: 14px 20px;
  text-align: left;
  border-bottom: 1px solid var(--glass-border);
  font: var(--font-body-sm);
}

th {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

td {
  color: var(--text-primary);
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background: rgba(255, 255, 255, 0.04);
}

/* ===========================================================
   13. STATUS BADGES
   =========================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font: var(--font-label-sm);
  font-size: 11px;
  font-weight: 500;
}

.badge-nuevo { background: rgba(33, 150, 243, 0.15); color: #64b5f6; }
.badge-procesando { background: rgba(255, 152, 0, 0.15); color: #ffb74d; }
.badge-enviado { background: rgba(76, 175, 80, 0.15); color: #81c784; }
.badge-entregado { background: rgba(76, 175, 80, 0.15); color: #81c784; }
.badge-cancelado { background: rgba(244, 67, 54, 0.15); color: #ef5350; }

/* ===========================================================
   14. LOADING & SPINNER
   =========================================================== */

.loading {
  text-align: center;
  padding: var(--space-2xl);
  color: var(--text-tertiary);
}

.spinner {
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 3px solid var(--glass-border);
  border-top-color: var(--brand-orange);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: var(--space-md);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Button loading */
.btn-loading .spinner-inline {
  width: 18px;
  height: 18px;
  border-width: 2px;
  margin-bottom: 0;
}

/* ===========================================================
   15. ALERTS & TOASTS
   =========================================================== */

.alert {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-lg);
  font: var(--font-body-sm);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.alert-success {
  background: rgba(76, 175, 80, 0.12);
  color: #a5d6a7;
  border: 1px solid rgba(76, 175, 80, 0.25);
}

.alert-error {
  background: var(--brand-error-dim);
  color: #ef5350;
  border: 1px solid rgba(244, 67, 54, 0.25);
}

.alert-info {
  background: rgba(33, 150, 243, 0.12);
  color: #64b5f6;
  border: 1px solid rgba(33, 150, 243, 0.25);
}

.alert[role="alert"] {
  animation: alertIn var(--transition-base);
}

@keyframes alertIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.toast {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-lg);
  background: var(--surface-container-high);
  border: 1px solid var(--glass-border-elevated);
  backdrop-filter: blur(var(--glass-blur-elevated));
  color: var(--text-primary);
  font: var(--font-body-sm);
  box-shadow: var(--shadow-glass-md);
  animation: toastIn var(--transition-base);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  min-width: 280px;
}

.toast.success { border-color: rgba(76, 175, 80, 0.5); }
.toast.error { border-color: rgba(244, 67, 54, 0.5); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(100%); }
  to { opacity: 1; transform: translateX(0); }
}

/* ===========================================================
   16. WHATSAPP WIDGET
   =========================================================== */

.whatsapp-widget {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  z-index: 5000;
}

.whatsapp-widget a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--brand-whatsapp);
  border-radius: 50%;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  text-decoration: none;
}

.whatsapp-widget a:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.5);
}

.whatsapp-widget .whatsapp-icon {
  font-size: 26px;
  filter: none;
}

/* ===========================================================
   17. CHAT WIDGET (n8n embed)
   =========================================================== */

.chat-widget-container {
  position: fixed;
  bottom: var(--space-xl);
  left: var(--space-xl);
  z-index: 5000;
}

.chat-widget-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--glass-bg-elevated);
  border: 1px solid var(--glass-border-elevated);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--shadow-glass-md);
  backdrop-filter: blur(var(--glass-blur));
  transition: all var(--transition-fast);
  color: var(--text-primary);
  font-size: 24px;
}

.chat-widget-toggle:hover {
  background: var(--glass-bg-hover);
  transform: scale(1.08);
  box-shadow: var(--shadow-glass-lg);
}

/* ===========================================================
   18. CARD GRID (generic)
   =========================================================== */

.glass-card {
  background: var(--glass-bg-standard);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-glass-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.glass-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glass-md);
  border-color: var(--glass-border-elevated);
}

.glass-card-elevated {
  background: var(--glass-bg-elevated);
  backdrop-filter: blur(var(--glass-blur-elevated));
  -webkit-backdrop-filter: blur(var(--glass-blur-elevated));
  border: 1px solid var(--glass-border-elevated);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-glass-lg);
}

/* ===========================================================
   19. FOOTER
   =========================================================== */

.footer {
  background: rgba(10, 17, 34, 0.8);
  backdrop-filter: blur(var(--glass-blur));
  border-top: 1px solid var(--glass-border);
  padding: var(--space-xl) 0;
  text-align: center;
  margin-top: var(--space-3xl);
}

.footer p {
  font: var(--font-body-sm);
  color: var(--text-tertiary);
}

/* ===========================================================
   20. PAGE HEADER
   =========================================================== */

.page-header {
  padding: var(--space-2xl) 0;
  text-align: center;
}

.page-header h2 {
  font: var(--font-headline-lg);
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.page-header p {
  font: var(--font-body-lg);
  color: var(--text-secondary);
}

/* ===========================================================
   21. RESPONSIVE
   =========================================================== */

@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }

  .header .container {
    flex-direction: column;
    gap: var(--space-sm);
    padding-top: var(--space-sm);
    padding-bottom: var(--space-sm);
  }

  .header {
    height: auto;
    min-height: var(--header-height);
  }

  .nav {
    gap: var(--space-xs);
    flex-wrap: wrap;
    justify-content: center;
  }

  .nav a {
    font-size: 13px;
    padding: var(--space-xs) var(--space-sm);
  }

  .hero {
    padding: var(--space-2xl) 0;
  }

  .hero h2 {
    font-size: 28px;
  }

  .hero p {
    font-size: 16px;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .whatsapp-widget {
    bottom: var(--space-md);
    right: var(--space-md);
  }

  .chat-widget-container {
    bottom: var(--space-md);
    left: var(--space-md);
  }

  .container {
    padding: 0 var(--space-md);
  }

  .publish-results {
    gap: var(--space-xs);
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero h2 {
    font-size: 44px;
  }
}

/* ===========================================================
   22. UTILITY CLASSES
   =========================================================== */

.text-center { text-align: center; }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.text-orange { color: var(--brand-orange); }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.hidden { display: none !important; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }

/* Screen reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ===========================================================
   23. LANDING PAGE (Achira public landing — landing.html)
   =========================================================== */

/* Logo wordmark variant used in the landing topbar */
.landing-logo {
  font: 700 24px/1.2 var(--font-family);
  letter-spacing: -0.02em;
  color: var(--text-primary);
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
}

.landing-logo .tagline {
  font: 500 13px/1.2 var(--font-family);
  color: var(--text-tertiary);
  font-weight: 400;
}

.landing-logo .accent {
  color: var(--brand-orange);
}

/* Section eyebrow */
.section-eyebrow {
  display: inline-block;
  font: var(--font-label-sm);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--brand-orange);
  background: var(--brand-orange-dim);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-md);
}

.section-title-lg {
  font: var(--font-headline-lg);
  font-size: clamp(28px, 4vw, 40px);
  text-align: center;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
  letter-spacing: -0.02em;
}

.section-subtitle {
  font: var(--font-body-lg);
  text-align: center;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
}

/* Hero variant — landing */
.hero-landing {
  padding: var(--space-4xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-landing::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 30%, rgba(255, 107, 53, 0.12), transparent);
  pointer-events: none;
}

.hero-landing h2 {
  font: 700 clamp(36px, 6vw, 56px)/1.1 var(--font-family);
  margin-bottom: var(--space-md);
  color: var(--text-primary);
  letter-spacing: -0.02em;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero-landing h2 .accent {
  background: linear-gradient(135deg, var(--brand-orange), #ffa07a);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-landing p {
  font: var(--font-body-lg);
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Canales grid (5 cards) */
.canales-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.canal-card {
  background: var(--glass-bg-standard);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-lg) var(--space-md);
  text-align: center;
  text-decoration: none;
  color: var(--text-primary);
  box-shadow: var(--shadow-glass-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base), background var(--transition-base);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  min-height: 160px;
}

.canal-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glass-md);
  border-color: var(--glass-border-elevated);
  background: var(--glass-bg-hover);
  color: var(--text-primary);
}

.canal-card .canal-icon {
  font-size: 36px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--glass-bg-elevated);
  border: 1px solid var(--glass-border);
}

.canal-card .canal-name {
  font: 600 16px/1.3 var(--font-family);
  color: var(--text-primary);
}

.canal-card .canal-desc {
  font: 400 13px/1.4 var(--font-family);
  color: var(--text-tertiary);
}

/* Productos grid */
.productos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.producto-card {
  background: var(--glass-bg-standard);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-glass-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.producto-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glass-md);
  border-color: var(--glass-border-elevated);
}

.producto-card .card-img-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, rgba(79, 124, 255, 0.1), rgba(255, 107, 53, 0.05));
  overflow: hidden;
}

.producto-card .card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.producto-card .card-img-wrap .img-skeleton {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font: 600 14px/1 var(--font-family);
  color: var(--text-tertiary);
  background: var(--glass-bg);
}

.badge-descuento {
  position: absolute;
  top: var(--space-sm);
  left: var(--space-sm);
  background: var(--brand-orange);
  color: #fff;
  font: 700 13px/1 var(--font-family);
  padding: 6px 10px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-button);
  letter-spacing: 0.02em;
}

.producto-card .card-body {
  padding: var(--space-md) var(--space-lg) var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  flex: 1;
}

.chip {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font: 600 11px/1.4 var(--font-family);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--glass-bg-elevated);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
}

.producto-card h3 {
  font: 600 18px/1.3 var(--font-family);
  color: var(--text-primary);
  margin: 0;
}

.producto-card .descripcion {
  font: 400 14px/1.5 var(--font-family);
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
  min-height: 42px;
}

.producto-card .precio {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-top: auto;
}

.producto-card .precio-antes {
  font: 400 14px/1 var(--font-family);
  color: var(--text-tertiary);
  text-decoration: line-through;
}

.producto-card .precio-actual {
  font: 700 22px/1 var(--font-family);
  color: var(--brand-orange);
}

.producto-card .precio-actual.sin-descuento {
  color: var(--text-primary);
}

.producto-card .stock-low {
  font: 600 12px/1.4 var(--font-family);
  color: #ffb74d;
  background: rgba(255, 152, 0, 0.12);
  border: 1px solid rgba(255, 152, 0, 0.3);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  align-self: flex-start;
}

.producto-card .btn {
  margin-top: var(--space-sm);
  width: 100%;
}

/* Videos grid */
.videos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.video-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  background: var(--bg-deep);
  box-shadow: var(--shadow-glass-sm);
}

.video-wrap iframe,
.video-wrap video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

/* Error / loading state */
.error-msg {
  text-align: center;
  padding: var(--space-2xl);
  color: var(--text-tertiary);
  font: var(--font-body-md);
}

.error-msg strong {
  color: var(--brand-error);
  display: block;
  margin-bottom: var(--space-sm);
}

/* Footer extra */
.footer-social {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  margin-bottom: var(--space-md);
}

.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  font-size: 18px;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.footer-social a:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-elevated);
  color: var(--brand-orange);
  transform: translateY(-2px);
}

/* Hide the chat-widget iframe that JS injects at first paint */
.chat-iframe {
  display: none;
}

.chat-iframe.visible {
  display: block;
}

/* Responsive tweaks for landing */
@media (max-width: 768px) {
  .hero-landing {
    padding: var(--space-2xl) 0;
  }

  .landing-logo {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }

  .canales-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .productos-grid {
    grid-template-columns: 1fr;
  }

  .videos-grid {
    grid-template-columns: 1fr;
  }
}