/**
 * theme-tokens.css - Sistema de Diseño y Tokens CSS Globales para InmortalNutri
 * Centraliza paleta de colores, tipografía, radios, sombras, modo oscuro y animaciones.
 */

:root {
  /* --- Colores Primarios y Acentos --- */
  --primary: #00adb5;
  --primary-hover: #00888e;
  --primary-light: rgba(0, 173, 181, 0.12);
  --primary-gradient: linear-gradient(135deg, #00adb5 0%, #5b42f3 55%, #af40ff 100%);
  --accent-purple: #af40ff;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;

  /* --- Superficies y Fondos (Modo Claro por defecto) --- */
  --bg-page: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-secondary: #f1f5f9;
  --bg-surface-elevated: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.85);
  --bg-glass-border: rgba(0, 0, 0, 0.08);

  /* --- Textos --- */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-inverse: #ffffff;

  /* --- Bordes y Separadores --- */
  --border-subtle: #e2e8f0;
  --border-medium: #cbd5e1;
  --border-strong: #94a3b8;

  /* --- Sombras --- */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 25px rgba(0, 173, 181, 0.35);

  /* --- Radios de Borde --- */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* --- Tipografía --- */
  --font-family-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-family-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* --- Transiciones --- */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Modo Oscuro Automático y Seleccionable --- */
html[data-theme="dark"] {
  --bg-page: #0b1020;
  --bg-surface: #12182b;
  --bg-surface-secondary: #1a233d;
  --bg-surface-elevated: #1e294b;
  --bg-glass: rgba(18, 24, 43, 0.82);
  --bg-glass-border: rgba(255, 255, 255, 0.08);

  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --text-inverse: #0f172a;

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.15);
  --border-strong: rgba(255, 255, 255, 0.25);

  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 12px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.6);
  --shadow-xl: 0 20px 35px rgba(0, 0, 0, 0.7);
  --shadow-glow: 0 0 30px rgba(0, 173, 181, 0.45);
}

/* --- Utilidades Globales de Estilo --- */
.glass-panel {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
}

.gradient-text {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Botones Modernos Globales (Respetando colores predispuestos) --- */
.btn,
.button {
  font-family: var(--font-family-sans);
  border-radius: var(--radius-md);
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast), filter var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  text-decoration: none;
  box-sizing: border-box;
  -webkit-user-select: none;
  user-select: none;
}

.btn::selection,
.button::selection,
.btn *::selection,
.button *::selection {
  background: rgba(0, 173, 181, 0.4);
  color: #ffffff;
}

.btn:active,
.button:active {
  transform: translateY(1px) scale(0.98);
  filter: brightness(0.92);
}

.btn:hover,
.button:hover {
  transform: translateY(-2px);
  filter: brightness(1.05);
}

.btn-primary,
.button.primary,
.btn-primary-gradient {
  background: linear-gradient(135deg, #00adb5 0%, #008187 100%);
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 14px rgba(0, 173, 181, 0.35);
}

.btn-primary:hover,
.button.primary:hover,
.btn-primary-gradient:hover {
  background: linear-gradient(135deg, #00c4cd 0%, #00adb5 100%);
  box-shadow: 0 8px 22px rgba(0, 173, 181, 0.5);
  color: #ffffff;
}

.btn-success {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
}

.btn-success:hover {
  background: linear-gradient(135deg, #34d399 0%, #10b981 100%);
  box-shadow: 0 8px 22px rgba(16, 185, 129, 0.5);
  color: #ffffff;
}

.btn-warning {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  color: #0f172a;
  border: none;
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35);
}

.btn-warning:hover {
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
  box-shadow: 0 8px 22px rgba(245, 158, 11, 0.5);
  color: #0f172a;
}

.btn-danger {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 14px rgba(239, 68, 68, 0.35);
}

.btn-danger:hover {
  background: linear-gradient(135deg, #f87171 0%, #ef4444 100%);
  box-shadow: 0 8px 22px rgba(239, 68, 68, 0.5);
  color: #ffffff;
}

.btn-info {
  background: linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%);
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 14px rgba(14, 165, 233, 0.35);
}

.btn-info:hover {
  background: linear-gradient(135deg, #38bdf8 0%, #0ea5e9 100%);
  box-shadow: 0 8px 22px rgba(14, 165, 233, 0.5);
  color: #ffffff;
}

.btn-outline-primary {
  background: rgba(0, 173, 181, 0.06);
  border: 1.5px solid #00adb5;
  color: #00adb5;
}

.btn-outline-primary:hover {
  background: #00adb5;
  color: #ffffff;
  box-shadow: 0 6px 18px rgba(0, 173, 181, 0.4);
}

.btn-outline-danger {
  background: rgba(239, 68, 68, 0.06);
  border: 1.5px solid #ef4444;
  color: #ef4444;
}

.btn-outline-danger:hover {
  background: #ef4444;
  color: #ffffff;
  box-shadow: 0 6px 18px rgba(239, 68, 68, 0.4);
}

.btn-outline-secondary {
  background: rgba(255, 255, 255, 0.05);
  border: 1.5px solid var(--border-medium, #cbd5e1);
  color: var(--text-primary, #334155);
}

.btn-outline-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: #00adb5;
  color: #00adb5;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.1);
}

html[data-theme="dark"] .btn-outline-secondary {
  color: #e2e8f0;
  border-color: rgba(255, 255, 255, 0.15);
}

html[data-theme="dark"] .btn-outline-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #38bdf8;
  border-color: #38bdf8;
}

/* Safe areas para notch y barra de navegación en iOS / Android */
.safe-area-top {
  padding-top: env(safe-area-inset-top, 0px);
}

.safe-area-bottom {
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

/* --- Scroll Fluido y Mejora Táctil Global (Sin alterar lógica existente) --- */
html {
  scroll-behavior: smooth;
  -webkit-tap-highlight-color: transparent;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

/* Barras de scroll sutiles y modernas */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.35);
  border-radius: 999px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(148, 163, 184, 0.6);
}

html[data-theme="dark"] ::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
}

html[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.35);
}

/* --- Header Global / Native App Responsivo --- */
#header {
  min-height: auto !important;
  height: auto !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  justify-content: center !important;
  padding-top: 1.5rem !important;
  padding-bottom: 0 !important;
  padding-left: 1rem !important;
  padding-right: 1rem !important;
  margin-top: 0 !important;
  margin-bottom: 0 !important;
  box-sizing: border-box !important;
}

#header.header-no-margin {
  margin-top: 0 !important;
  margin-bottom: 0 !important;
  padding-top: 1.5rem !important;
  padding-bottom: 0 !important;
}

.app-header-logo-link {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  text-decoration: none !important;
  border: none !important;
  border-bottom: none !important;
  outline: none !important;
  box-shadow: none !important;
  padding: 0 !important;
  max-width: 95vw !important;
  margin: 0 auto !important;
  background: transparent !important;
  transform: translateY(40px) !important;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.25s ease !important;
}

.app-header-logo-link:hover,
.app-header-logo-link:focus-visible {
  transform: translateY(37px) scale(1.03) !important;
  text-decoration: none !important;
  border: none !important;
  border-bottom: none !important;
  outline: none !important;
}

.app-header-logo-link:active {
  transform: translateY(40px) scale(0.97) !important;
}

.app-header-logo-dark,
.app-header-logo-light {
  height: clamp(3.2rem, 7.5vw, 4.6rem) !important;
  max-height: 5.2rem !important;
  max-width: min(100%, 340px) !important;
  width: auto !important;
  object-fit: contain !important;
  vertical-align: middle !important;
  border: none !important;
  transition: opacity 0.2s ease, filter 0.2s ease !important;
}

/* El fondo superior/hero global es oscuro en ambos temas, por lo que el logo blanco es el predeterminado con máxima visibilidad */
.app-header-logo-dark {
  display: block !important;
  filter: drop-shadow(0 4px 14px rgba(0, 0, 0, 0.55));
}

.app-header-logo-light {
  display: none !important;
  filter: drop-shadow(0 3px 10px rgba(0, 0, 0, 0.15));
}

/* El logo negro solo se activa cuando el contenedor del header tiene fondo blanco/claro explícito */
.has-light-bg .app-header-logo-dark,
.header-light-surface .app-header-logo-dark {
  display: none !important;
}

.has-light-bg .app-header-logo-light,
.header-light-surface .app-header-logo-light {
  display: block !important;
}

@media screen and (max-width: 736px) {
  #header {
    padding-top: 1rem !important;
    padding-bottom: 0 !important;
    padding-left: 0.75rem !important;
    padding-right: 0.75rem !important;
    margin-bottom: 0 !important;
  }
  .app-header-logo-link {
    transform: translateY(24px) !important;
  }
  .app-header-logo-link:hover,
  .app-header-logo-link:focus-visible {
    transform: translateY(22px) scale(1.03) !important;
  }
  .app-header-logo-link:active {
    transform: translateY(24px) scale(0.97) !important;
  }
  .app-header-logo-dark,
  .app-header-logo-light {
    height: clamp(2.6rem, 9vw, 3.6rem) !important;
    max-width: 260px !important;
  }
}

@media screen and (max-width: 480px) {
  #header {
    padding-top: 0.75rem !important;
    padding-bottom: 0 !important;
    padding-left: 0.5rem !important;
    padding-right: 0.5rem !important;
    margin-bottom: 0 !important;
  }
  .app-header-logo-link {
    transform: translateY(18px) !important;
  }
  .app-header-logo-link:hover,
  .app-header-logo-link:focus-visible {
    transform: translateY(16px) scale(1.03) !important;
  }
  .app-header-logo-link:active {
    transform: translateY(18px) scale(0.97) !important;
  }
  .app-header-logo-dark,
  .app-header-logo-light {
    height: clamp(2.3rem, 10vw, 3.1rem) !important;
    max-width: 230px !important;
  }
}

/* En escritorio (>980px), el botón de menú lateral (#navPanelToggle) y #navPanel no deben verse jamás */
@media screen and (min-width: 981px) {
  #navPanelToggle,
  #navPanelToggle.alt,
  html[data-theme="light"] #navPanelToggle,
  html[data-theme="light"] #navPanelToggle.alt,
  html[data-theme="dark"] #navPanelToggle,
  html[data-theme="dark"] #navPanelToggle.alt,
  body.is-navPanel-visible #navPanelToggle,
  body.is-navPanel-visible #navPanelToggle.alt,
  #navPanel {
    display: none !important;
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
  }
}