/**
 * Burguar Dreams — tema día / noche
 * Día: blanco + carbón + taupe
 * Noche: carbón + blanco + beige
 */

:root {
  color-scheme: light;
  /* Solo props baratas de pintar — box-shadow/filter matan el FPS */
  --theme-ease: background-color 2s ease-out, color 2s ease-out,
    border-color 2s ease-out;
  --theme-vt-duration: 2s;
  --theme-vt-ease: ease-out;
}

[data-theme="dark"] {
  color-scheme: dark;

  --bg: #1C1C1C;
  --bg-secondary: #252525;
  --surface: #2F2F2F;
  --bg-elevated: #2F2F2F;
  --input-bg: #252525;

  --text: #FFFFFF;
  --text-secondary: #E5E5E2;
  --text-muted: #C8B79C;

  --accent: #C8B79C;
  --accent-light: #9E8D73;
  --border: #3A3A3A;

  --btn-primary: #FFFFFF;
  --btn-on-primary: #1C1C1C;
  --btn-accent: #C8B79C;
  --btn-on-accent: #1C1C1C;
  --btn-glow-fg: #1C1C1C;

  --glow-brown-soft: #3A3530;
  --glow-brown: #C8B79C;
  --glow-brown-deep: #9E8D73;

  /* Alias: textos claros; fondos de sección más oscuros */
  --cream: #252525;
  --sand: #3A3A3A;
  --stone: #6B6B6B;
  --warm-dark: #FFFFFF;
  --warm-mid: #E5E5E2;
  --white: #FFFFFF;
}

/* ── Base ── */
html {
  background-color: var(--bg);
}

body {
  background: var(--bg) !important;
  color: var(--text);
  transition: var(--theme-ease);
}

/* ── Transiciones ── */
#main-header,
header,
#home-view,
#detail-view,
.hero,
.about-section,
.guide-section,
.properties-section,
.corporate-section,
.faq-section,
.contact-section,
.card,
.card-info,
.modal,
.lang-dropdown,
.cookie-banner,
.footer-bar,
.corp-feature,
.spec-item,
.detail-hero,
.detail-sticky-cta,
.detail-view-topbar,
.form-group input,
.form-group select,
.form-group textarea {
  transition: var(--theme-ease);
}

/* View Transition: crossfade en compositor (~60 fps). Sin pelear con CSS por elemento. */
html.theme-vt,
html.theme-vt body,
html.theme-vt #main-header,
html.theme-vt header,
html.theme-vt #home-view,
html.theme-vt #detail-view,
html.theme-vt .hero,
html.theme-vt .about-section,
html.theme-vt .guide-section,
html.theme-vt .properties-section,
html.theme-vt .corporate-section,
html.theme-vt .faq-section,
html.theme-vt .contact-section,
html.theme-vt .card,
html.theme-vt .card-info,
html.theme-vt .modal,
html.theme-vt .lang-dropdown,
html.theme-vt .cookie-banner,
html.theme-vt .footer-bar,
html.theme-vt .corp-feature,
html.theme-vt .spec-item,
html.theme-vt .detail-hero,
html.theme-vt .detail-sticky-cta,
html.theme-vt .detail-view-topbar,
html.theme-vt .form-group input,
html.theme-vt .form-group select,
html.theme-vt .form-group textarea {
  transition: none !important;
}

@supports (view-transition-name: none) {
  ::view-transition-old(root),
  ::view-transition-new(root) {
    animation-duration: var(--theme-vt-duration);
    animation-timing-function: var(--theme-vt-ease);
  }

  ::view-transition-old(root) {
    animation-name: theme-vt-fade-out;
    z-index: 1;
  }

  ::view-transition-new(root) {
    animation-name: theme-vt-fade-in;
    z-index: 2;
  }

  ::view-transition-group(theme-toggle) {
    animation-duration: 0.55s;
    animation-timing-function: cubic-bezier(0.34, 1.35, 0.64, 1);
  }
}

@keyframes theme-vt-fade-out {
  from { opacity: 1; }
  to { opacity: 0; }
}

@keyframes theme-vt-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ═══════════════════════════════════════════
   MODO OSCURO — superficies
   ═══════════════════════════════════════════ */

[data-theme="dark"] #home-view,
[data-theme="dark"] #detail-view,
[data-theme="dark"] .hero,
[data-theme="dark"] .about-section,
[data-theme="dark"] .properties-section,
[data-theme="dark"] .corporate-section,
[data-theme="dark"] .faq-section,
[data-theme="dark"] .page-section:not(.contact-section):not(.guide-section) {
  background-color: var(--bg) !important;
  color: var(--text);
}

[data-theme="dark"] .about-section,
[data-theme="dark"] .corporate-section,
[data-theme="dark"] .faq-section {
  background-color: var(--bg-secondary) !important;
}

[data-theme="dark"] .card,
[data-theme="dark"] .card-info,
[data-theme="dark"] .card-placeholder,
[data-theme="dark"] .corp-feature,
[data-theme="dark"] .spec-item,
[data-theme="dark"] .modal,
[data-theme="dark"] .lang-dropdown,
[data-theme="dark"] .cookie-banner,
[data-theme="dark"] .cookie-panel,
[data-theme="dark"] .legal-panel,
[data-theme="dark"] .detail-hero,
[data-theme="dark"] .detail-hero-placeholder,
[data-theme="dark"] .detail-body,
[data-theme="dark"] .amenity-item,
[data-theme="dark"] .form-extra {
  background-color: var(--surface) !important;
  color: var(--text);
  border-color: var(--border);
}

[data-theme="dark"] .grid .card:not(.card-scroll) {
  box-shadow: none;
  border-color: var(--border);
}

[data-theme="dark"] .grid .card.card-scroll {
  border-color: var(--border);
}

[data-theme="dark"] .card:not(.card-scroll):hover {
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
}

[data-theme="dark"] header,
[data-theme="dark"] #main-header {
  background: color-mix(in srgb, var(--bg) 92%, transparent) !important;
  border-bottom-color: var(--border) !important;
}

[data-theme="dark"] .header-top {
  border-bottom-color: var(--border);
}

[data-theme="dark"] .detail-sticky-cta,
[data-theme="dark"] .detail-view-topbar {
  background: color-mix(in srgb, var(--bg) 96%, transparent) !important;
  border-color: var(--border);
}

[data-theme="dark"] .hero-bg {
  filter: brightness(0.4) saturate(1.05);
}

[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group select,
[data-theme="dark"] .form-group textarea {
  background: var(--input-bg) !important;
  color: var(--text);
  border-bottom-color: var(--border);
}

[data-theme="dark"] .form-group input:focus,
[data-theme="dark"] .form-group select:focus,
[data-theme="dark"] .form-group textarea:focus {
  background: var(--surface) !important;
}

[data-theme="dark"] .form-group input::placeholder,
[data-theme="dark"] .form-group textarea::placeholder {
  color: var(--text-muted);
  opacity: 0.85;
}

[data-theme="dark"] .count-badge {
  background: var(--bg-secondary);
  color: var(--text);
}

[data-theme="dark"] .lang-option:hover {
  background: var(--bg-secondary);
}

[data-theme="dark"] .faq-item {
  border-bottom-color: var(--border);
}

[data-theme="dark"] .corporate-features,
[data-theme="dark"] .specs-grid {
  background: var(--bg-secondary);
  border-color: var(--border);
}

/* Contacto y pie: siempre carbón de marca (mismo tono, sin franja más negra) */
.contact-section {
  background: var(--brand-ink) !important;
}

[data-theme="dark"] .contact-section {
  background: var(--brand-ink) !important;
}

.footer-bar,
[data-theme="dark"] .footer-bar {
  background: transparent !important;
}

[data-theme="dark"] option {
  background: var(--surface);
  color: var(--text);
}

/* Día: secciones alternas suaves */
:root:not([data-theme="dark"]) .about-section,
:root:not([data-theme="dark"]) .corporate-section,
:root:not([data-theme="dark"]) .faq-section {
  background-color: var(--bg-secondary);
}

:root:not([data-theme="dark"]) .card {
  border-color: var(--border);
}

/* ── Interruptor Sol / Luna — misma altura y trazo que .lang-btn ── */
.theme-toggle {
  /* Altura ≈ .lang-btn: padding 0.4rem×2 + línea ~0.75rem + borde 1px×2 */
  --tt-h: calc(0.8rem + 0.9rem + 2px);
  /* Ancho suficiente para que el thumb no tape sol/luna */
  --tt-w: 68px;
  --tt-pad: 2px;
  --tt-thumb: calc(var(--tt-h) - 2px - var(--tt-pad) * 2);
  --tt-travel: calc(var(--tt-w) - var(--tt-pad) * 2 - var(--tt-thumb) - 2px);
  --tt-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --tt-dur: 0.42s;
  position: relative;
  display: inline-flex;
  align-items: center;
  width: var(--tt-w);
  height: var(--tt-h);
  padding: var(--tt-pad);
  border-radius: var(--btn-radius, 2rem);
  /* Mismo borde que .lang-btn (color + grosor) */
  border: 1px solid var(--stone);
  /* Igual que .lang-btn: sin relleno blanco; se ve el crema del header */
  background: none;
  box-shadow: none;
  cursor: pointer;
  flex-shrink: 0;
  overflow: hidden;
  appearance: none;
  -webkit-appearance: none;
  box-sizing: border-box;
  view-transition-name: theme-toggle;
  transition: background var(--tt-dur) var(--tt-ease), border-color var(--tt-dur) var(--tt-ease);
  -webkit-tap-highlight-color: transparent;
  outline: none;
}

[data-theme="dark"] .theme-toggle {
  border-color: var(--stone);
  background: none;
  box-shadow: none;
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.theme-toggle:active {
  transform: none;
}

.theme-toggle:hover {
  border-color: var(--accent);
}

.theme-toggle__defs {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

/* Capas neumórficas: desactivadas (temática flat) */
.theme-toggle__groove,
.theme-toggle__gloss,
.theme-toggle__ao {
  display: none;
}

.theme-toggle__track-icons {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 9px;
  pointer-events: none;
  z-index: 1;
}

.theme-toggle__sun,
.theme-toggle__moon,
.theme-toggle__thumb-sun,
.theme-toggle__thumb-moon {
  width: 14px;
  height: 14px;
  display: block;
}

.theme-toggle__sun {
  color: var(--accent, #9E8D73);
  transition: color var(--tt-dur) var(--tt-ease), opacity var(--tt-dur) var(--tt-ease);
}

.theme-toggle__moon {
  color: var(--warm-mid, #3A3A3A);
  transition: color var(--tt-dur) var(--tt-ease), opacity var(--tt-dur) var(--tt-ease);
}

[data-theme="dark"] .theme-toggle__sun {
  color: var(--accent-light, #C8B79C);
}

[data-theme="dark"] .theme-toggle__moon {
  color: var(--accent-light, #C8B79C);
}

.theme-toggle__thumb {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--tt-thumb);
  height: var(--tt-thumb);
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid var(--stone, #C4B8A4);
  background: var(--btn-accent, #9E8D73);
  box-shadow: none;
  transform: translate3d(0, 0, 0);
  will-change: transform;
  /* Solo transform → compositor GPU ~60fps */
  transition:
    transform var(--tt-dur) var(--tt-ease),
    background var(--tt-dur) var(--tt-ease),
    border-color var(--tt-dur) var(--tt-ease);
}

[data-theme="dark"] .theme-toggle__thumb {
  transform: translate3d(var(--tt-travel), 0, 0);
  border-color: var(--accent-light, #C8B79C);
  background: var(--accent-light, #C8B79C);
  box-shadow: none;
}

.theme-toggle__thumb-shine {
  display: none;
}

.theme-toggle__particles {
  display: none;
}

.theme-toggle__particle,
.theme-toggle__particle-ring {
  display: none;
}

.theme-toggle__thumb-icon {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
}

.theme-toggle__thumb-sun,
.theme-toggle__thumb-moon {
  grid-area: 1 / 1;
  transition: opacity 0.28s var(--tt-ease);
}

.theme-toggle__thumb-sun {
  color: var(--btn-on-accent, #FFFFFF);
}

.theme-toggle__thumb-moon {
  color: var(--brand-ink, #1C1C1C);
  opacity: 0;
}

[data-theme="dark"] .theme-toggle__thumb-sun {
  opacity: 0;
}

[data-theme="dark"] .theme-toggle__thumb-moon {
  opacity: 1;
}

@media (max-width: 900px) {
  .theme-toggle {
    --tt-w: 64px;
  }
}

/* Siempre animar el interruptor (Windows reduced-motion no lo mata) */
@media (prefers-reduced-motion: reduce) {
  .theme-toggle,
  .theme-toggle__thumb,
  .theme-toggle__thumb-sun,
  .theme-toggle__thumb-moon,
  .theme-toggle__sun,
  .theme-toggle__moon {
    transition-duration: 0.42s !important;
    transition-timing-function: cubic-bezier(0.22, 1, 0.36, 1) !important;
  }

  .theme-toggle__particle-ring {
    animation: none !important;
  }
}