/* ==========================================================================
   BAAN TON MAI — Premium Enhancement Layer
   Transforms the base design into a luxury experience.
   ========================================================================== */

/* ==========================================================================
   0. GRAIN TEXTURE OVERLAY (Visual Polish)
   ========================================================================== */

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.035;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* ==========================================================================
   1. PAGE TRANSITIONS
   ========================================================================== */

body {
  opacity: 0;
  transition: opacity 400ms var(--ease-out-expo);
}

body.page-loaded {
  opacity: 1;
}

body.page-transitioning {
  opacity: 0;
  transition: opacity 300ms ease;
}

/* ==========================================================================
   2. SCROLL PROGRESS BAR
   ========================================================================== */

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: var(--gradient-gold);
  z-index: 10001;
  transition: width 100ms linear;
  pointer-events: none;
}

/* ==========================================================================
   3. SCROLL-DOWN CUE
   ========================================================================== */

.scroll-cue {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.7);
  cursor: pointer;
  animation: scrollBounce 2s ease-in-out infinite;
  transition: opacity 400ms ease;
  z-index: 5;
}

.scroll-cue:hover {
  color: white;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ==========================================================================
   4. REVEAL ANIMATION SYSTEM
   ========================================================================== */

.reveal-hidden {
  opacity: 0;
  will-change: opacity, transform;
}

[data-reveal="up"].reveal-hidden { transform: translateY(40px); }
[data-reveal="down"].reveal-hidden { transform: translateY(-40px); }
[data-reveal="left"].reveal-hidden { transform: translateX(-40px); }
[data-reveal="right"].reveal-hidden { transform: translateX(40px); }
[data-reveal="scale"].reveal-hidden { transform: scale(0.92); }
[data-reveal="fade"].reveal-hidden { transform: none; }

.reveal-visible {
  opacity: 1 !important;
  transform: none !important;
  transition: opacity var(--duration-entrance) var(--ease-out-expo),
              transform var(--duration-entrance) var(--ease-out-expo);
}

/* ==========================================================================
   5. NAVIGATION PREMIUM
   ========================================================================== */

/* Frosted glass upgrade */
.nav--scrolled {
  background: rgba(255, 255, 255, 0.85) !important;
  backdrop-filter: blur(20px) saturate(180%) !important;
  -webkit-backdrop-filter: blur(20px) saturate(180%) !important;
  border-bottom: 1px solid rgba(184, 134, 11, 0.15);
}

/* Animated link underline */
.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 400ms var(--ease-out-expo);
}

.nav__link {
  position: relative;
}

.nav__link:hover::after,
.nav__link--active::after {
  transform: scaleX(1);
}

/* Hamburger → X morphing */
.nav__toggle span {
  transition: transform 300ms var(--ease-out-expo),
              opacity 200ms ease;
}

.nav__toggle--active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.nav__toggle--active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav__toggle--active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile menu link stagger */
.nav__mobile .nav__link {
  opacity: 0;
  transform: translateX(20px);
  transition: opacity 300ms var(--ease-out-expo),
              transform 300ms var(--ease-out-expo);
}

.nav__mobile--open .nav__link {
  opacity: 1;
  transform: translateX(0);
}

.nav__mobile--open .nav__link:nth-child(1) { transition-delay: 50ms; }
.nav__mobile--open .nav__link:nth-child(2) { transition-delay: 100ms; }
.nav__mobile--open .nav__link:nth-child(3) { transition-delay: 150ms; }
.nav__mobile--open .nav__link:nth-child(4) { transition-delay: 200ms; }
.nav__mobile--open .nav__link:nth-child(5) { transition-delay: 250ms; }

/* Language switch upgrade */
.lang-switch {
  border: 1px solid rgba(184, 134, 11, 0.3) !important;
}

.lang-switch__btn.active {
  background: var(--gradient-gold) !important;
  color: white !important;
}

/* Mobile lang switch spacing */
.lang-switch--mobile {
  margin-top: var(--space-6);
}

/* ==========================================================================
   6. BUTTONS PREMIUM
   ========================================================================== */

.btn {
  position: relative;
  overflow: hidden;
  transition: transform 300ms var(--ease-out-expo),
              box-shadow 300ms var(--ease-out-expo),
              background-color 300ms ease,
              color 300ms ease;
}

.btn:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: var(--shadow-lg);
}

.btn:active {
  transform: translateY(0) scale(0.98);
  box-shadow: var(--shadow-sm);
}

/* Animated arrow on CTA buttons */
.btn--primary::after {
  content: ' \2192';
  display: inline-block;
  transition: transform 300ms var(--ease-out-expo);
}

.btn--primary:hover::after {
  transform: translateX(4px);
}

/* Ripple effect */
.btn-ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: scale(0);
  animation: ripple 600ms var(--ease-out-expo);
  pointer-events: none;
}

@keyframes ripple {
  to {
    transform: scale(1);
    opacity: 0;
  }
}

/* Outline button fill on hover */
.btn--outline {
  background: transparent;
  position: relative;
  z-index: 1;
}

.btn--outline::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--color-primary);
  border-radius: inherit;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 400ms var(--ease-out-expo);
  z-index: -1;
}

.btn--outline:hover::before {
  transform: scaleX(1);
}

.btn--outline:hover {
  color: white;
  border-color: var(--color-primary);
}

/* ==========================================================================
   7. HERO PREMIUM
   ========================================================================== */

/* Cinematic vignette overlay */
.hero::before {
  background: var(--gradient-overlay) !important;
}

/* Ken Burns (slow zoom) */
.hero--ken-burns {
  overflow: hidden;
}

.hero--ken-burns::after {
  content: '';
  position: absolute;
  inset: 0;
  background: inherit;
  background-size: cover;
  background-position: center;
  animation: kenBurns 20s ease-in-out infinite alternate;
  z-index: -1;
}

@keyframes kenBurns {
  0% { transform: scale(1); }
  100% { transform: scale(1.06); }
}

/* Hero title premium sizing */
.hero__title {
  font-size: var(--text-6xl) !important;
  letter-spacing: var(--tracking-tight);
  text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

@media (min-width: 768px) {
  .hero__title {
    font-size: var(--text-7xl) !important;
  }
}

/* Gradient text on hero title */
.text-gradient {
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ==========================================================================
   8. CARDS PREMIUM
   ========================================================================== */

.card,
.review,
.info-card {
  transition: transform 400ms var(--ease-out-expo),
              box-shadow 400ms var(--ease-out-expo);
  will-change: transform;
}

.card:hover {
  box-shadow: var(--shadow-xl) !important;
}

/* Card image zoom on hover */
.card__image img,
.card .card__image {
  transition: transform 600ms var(--ease-out-expo);
}

.card:hover .card__image img,
.card:hover .card__image {
  transform: scale(1.08);
}

/* Card image overlay gradient */
.card__image {
  position: relative;
  overflow: hidden;
}

.card__image::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(to top, rgba(0,0,0,0.3), transparent);
  opacity: 0;
  transition: opacity 400ms ease;
}

.card:hover .card__image::after {
  opacity: 1;
}

/* ==========================================================================
   9. REVIEWS PREMIUM
   ========================================================================== */

.review {
  border-left: 3px solid var(--color-gold);
  position: relative;
}

/* Larger decorative quotation mark */
.review__text::before {
  font-size: 5rem !important;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.6;
}

/* ==========================================================================
   10. GALLERY PREMIUM
   ========================================================================== */

.gallery-grid__item {
  cursor: zoom-in;
  overflow: hidden;
  border-radius: 12px !important;
}

.gallery-grid__item img {
  transition: transform 600ms var(--ease-out-expo),
              filter 600ms ease;
}

.gallery-grid__item:hover img {
  transform: scale(1.06);
  filter: brightness(1.05) saturate(1.1);
}

/* Hover overlay with icon */
.gallery-grid__item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(27, 67, 50, 0.4);
  opacity: 0;
  transition: opacity 400ms var(--ease-out-expo);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: inherit;
}

.gallery-grid__item:hover::after {
  opacity: 1;
}

/* Lightbox backdrop blur */
.lightbox {
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.lightbox__image {
  transition: opacity 300ms ease;
}

/* ==========================================================================
   11. FOOTER PREMIUM
   ========================================================================== */

.footer {
  background: var(--gradient-footer) !important;
  position: relative;
}

/* Footer grain overlay */
.footer::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.03;
  mix-blend-mode: overlay;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* Footer logo & brand name */
.footer .nav__logo {
  color: #fff !important;
}

.footer .nav__logo span {
  color: #fff !important;
}

/* Footer link hover underline */
.footer a {
  position: relative;
}

.footer__nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--color-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 300ms var(--ease-out-expo);
}

.footer__nav a:hover::after {
  transform: scaleX(1);
}

.footer__nav a:hover {
  color: var(--color-gold-light) !important;
}

/* ==========================================================================
   12. BACK TO TOP BUTTON
   ========================================================================== */

.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 400ms var(--ease-out-expo),
              transform 400ms var(--ease-out-expo),
              background-color 200ms ease;
  z-index: 100;
  pointer-events: none;
}

.back-to-top--visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top:hover {
  background: var(--color-gold);
  box-shadow: var(--shadow-glow-gold);
  transform: translateY(-2px);
}

/* ==========================================================================
   13. MENU CARDS PREMIUM (classes from HTML cleanup)
   ========================================================================== */

.menu-card {
  background: var(--color-surface);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform 400ms var(--ease-out-expo),
              box-shadow 400ms var(--ease-out-expo);
}

.menu-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.menu-card__image {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
}

.menu-card__body {
  padding: var(--space-6) var(--space-6) var(--space-8);
}

.menu-card__heading {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  color: var(--color-primary);
  text-align: center;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  margin-bottom: var(--space-2);
}

.menu-card__heading-th {
  font-family: var(--font-thai);
  font-size: var(--text-sm);
  color: var(--color-text-light);
  text-align: center;
  margin-bottom: var(--space-4);
}

.menu-card__divider {
  width: 40px;
  height: 2px;
  background: var(--color-gold);
  margin: 0 auto var(--space-6);
  border: none;
}

.menu-card__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.menu-card__item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  font-size: var(--text-base);
  color: var(--color-text);
  border-bottom: 1px solid var(--color-bg-alt);
  transition: background-color 200ms ease;
}

.menu-card__item:last-child {
  border-bottom: none;
}

.menu-card__item:hover {
  background-color: var(--color-primary-50);
  padding-left: var(--space-2);
  padding-right: var(--space-2);
  border-radius: 4px;
}

.menu-card__bullet {
  width: 6px;
  height: 6px;
  background: var(--color-gold);
  border-radius: 50%;
  flex-shrink: 0;
}

/* ==========================================================================
   14. MENU NOTE
   ========================================================================== */

.menu-note {
  max-width: var(--container-narrow);
  margin: 0 auto;
  text-align: center;
  padding: var(--space-8);
  background: var(--gradient-surface);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-bg-alt);
}

.menu-note__text {
  font-style: italic;
  color: var(--color-text-light);
  font-size: var(--text-lg);
  line-height: 1.8;
}

/* ==========================================================================
   15. INFO CARDS PREMIUM
   ========================================================================== */

.info-card {
  border-left: 3px solid var(--color-gold);
  background: var(--gradient-surface);
  transition: transform 300ms var(--ease-out-expo),
              box-shadow 300ms var(--ease-out-expo);
}

.info-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.info-card__icon {
  transition: transform 300ms var(--ease-spring);
}

.info-card:hover .info-card__icon {
  transform: scale(1.15);
}

.info-card__link {
  color: inherit;
  text-decoration: none;
}

.info-card__link:hover {
  color: var(--color-secondary);
}

/* ==========================================================================
   16. MAP CONTAINER
   ========================================================================== */

.map-container {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.map-container__iframe {
  border: 0;
  display: block;
  width: 100%;
}

/* ==========================================================================
   17. IMAGE PREMIUM
   ========================================================================== */

.section__image--styled {
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform 600ms var(--ease-out-expo),
              filter 400ms ease;
}

.section__image--styled:hover {
  filter: brightness(1.05) saturate(1.1);
}

/* ==========================================================================
   18. LAYOUT UTILITIES (from HTML cleanup)
   ========================================================================== */

.two-col--reversed {
  direction: ltr;
}

.grid-2--centered {
  align-items: center;
}

.section__heading {
  font-family: var(--font-heading);
  color: var(--color-primary);
}

.section__text {
  color: var(--color-text-light);
}

/* ==========================================================================
   19. ORGANIC SECTION DIVIDERS
   ========================================================================== */

.divider-wave {
  width: 100%;
  height: 40px;
  overflow: hidden;
  margin: -1px 0;
  position: relative;
}

.divider-wave svg {
  position: absolute;
  bottom: 0;
  width: 100%;
  height: 100%;
}

/* Leaf divider */
.divider-leaf {
  text-align: center;
  padding: var(--space-8) 0;
  opacity: 0.2;
  font-size: 1.5rem;
  letter-spacing: var(--tracking-widest);
  color: var(--color-primary);
}

/* ==========================================================================
   20. SELECTION STYLING
   ========================================================================== */

::selection {
  background: rgba(184, 134, 11, 0.25);
  color: var(--color-text);
}

::-moz-selection {
  background: rgba(184, 134, 11, 0.25);
  color: var(--color-text);
}

/* ==========================================================================
   21. REDUCED MOTION
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  .reveal-hidden {
    opacity: 1 !important;
    transform: none !important;
  }

  .scroll-cue,
  .scroll-progress {
    display: none;
  }

  .hero--ken-burns::after {
    animation: none;
  }

  .btn-ripple {
    animation: none;
  }

  * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* ==========================================================================
   22. SPACING FIXES
   ========================================================================== */

/* CTA button needs breathing room after image grid */
.grid-3 + .text-center,
.grid-2 + .text-center {
  margin-top: var(--space-16);
}

/* Extra bottom breathing room when a hero/vibe section follows */
.section:has(+ .hero) {
  padding-bottom: var(--space-24);
}

/* Map needs separation from info cards above */
.map-container {
  margin-top: var(--space-12);
}

/* ==========================================================================
   23. FOOTER HEADING FIX
   ========================================================================== */

/* Ensure footer h4 headings are visible against dark background */
.footer h4,
.footer__nav h4,
.footer__contact h4 {
  color: var(--color-gold-light) !important;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-4);
}

/* ==========================================================================
   24. VALUES CARDS (About page)
   ========================================================================== */

.card--value {
  text-align: center;
  padding: var(--space-8) var(--space-6);
  border-top: 3px solid var(--color-gold);
  background: var(--gradient-surface);
}

.card--value:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.card--value .card__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-6);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-50);
  border-radius: 50%;
  color: var(--color-primary);
}

.card--value .card__icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--color-primary);
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.card--value .card__title {
  margin-bottom: var(--space-3);
}

/* ==========================================================================
   25. INFO CARD ICON SIZING
   ========================================================================== */

.info-card__icon {
  font-size: 0; /* Hide any text/emoji fallback */
}

.info-card__icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--color-primary);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ==========================================================================
   26. RESPONSIVE PREMIUM ADJUSTMENTS
   ========================================================================== */

@media (max-width: 767px) {
  .hero__title {
    font-size: var(--text-4xl) !important;
  }

  .scroll-cue {
    bottom: 1.5rem;
  }

  .back-to-top {
    bottom: 1.5rem;
    right: 1.5rem;
    width: 40px;
    height: 40px;
  }

  .menu-card__heading {
    font-size: var(--text-xl);
  }
}