/* ============================================
   Chaya Method — Premium Coaching Website
   ============================================ */

:root {
  --color-cream: #F5F0EB;
  --color-cream-dark: #EDE6DD;
  --color-black: #1A1A1A;
  --color-white: #FFFFFF;
  --color-gold: #C9A96E;
  --color-gold-light: #D4BC8B;
  --color-gold-dark: #B8954F;
  --color-gray: #8A8A8A;
  --color-gray-light: #C4C4C4;
  --color-warm-white: #FDFCFA;

  --font-serif: 'Cormorant Garamond', Georgia, serif;
  --font-sans: 'Montserrat', -apple-system, sans-serif;

  --nav-height: 80px;
  --container-max: 1200px;
  --container-padding: 24px;

  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-slow: 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-sans);
  font-weight: 300;
  color: var(--color-black);
  background: var(--color-warm-white);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }

/* ---- i18n ---- */
body.thai-hidden [data-lang-th] { display: none !important; }
body:not(.thai-hidden) [data-lang-en] { display: none !important; }
body:not(.thai-hidden) [data-lang-th] { display: inline; }

/* ---- Container ---- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* ---- Section defaults ---- */
.section {
  padding: 120px 0;
}
.section__eyebrow {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 16px;
}
.section__title {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.2;
  margin-bottom: 24px;
  color: var(--color-black);
}
.section__title--center { text-align: center; }
.section__subtitle {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
  color: var(--color-gray);
  font-size: 1.05rem;
}

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  padding: 16px 40px;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border-radius: 0;
  transition: var(--transition);
  text-align: center;
}
.btn--primary {
  background: var(--color-gold);
  color: var(--color-white);
}
.btn--primary:hover {
  background: var(--color-gold-dark);
}
.btn--outline {
  border: 1px solid var(--color-gold);
  color: var(--color-gold);
  background: transparent;
}
.btn--outline:hover {
  background: var(--color-gold);
  color: var(--color-white);
}

/* ---- Animations ---- */
.animate-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.animate-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: var(--transition);
}
.nav--scrolled {
  background: rgba(253, 252, 250, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(0,0,0,0.05);
}
.nav__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__logo {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  color: var(--color-white);
  transition: var(--transition);
}
.nav--scrolled .nav__logo { color: var(--color-black); }
.nav__links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav__links a {
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.85);
  transition: var(--transition);
}
.nav--scrolled .nav__links a { color: var(--color-black); }
.nav__links a:hover { color: var(--color-gold); }

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  z-index: 1001;
}
.nav__toggle span {
  width: 24px;
  height: 1.5px;
  background: var(--color-white);
  transition: var(--transition);
}
.nav--scrolled .nav__toggle span { background: var(--color-black); }

/* Language toggle */
.lang-toggle {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.7);
  display: flex;
  gap: 6px;
  align-items: center;
}
.nav--scrolled .lang-toggle { color: var(--color-gray); }
.lang-toggle__en, .lang-toggle__th { cursor: pointer; padding: 2px 4px; transition: var(--transition); }
.lang-toggle__en:hover, .lang-toggle__th:hover { color: var(--color-gold); }
.lang-toggle .active { color: var(--color-gold); font-weight: 600; }

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--color-black);
  overflow: hidden;
}
.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,26,26,0.85) 0%, rgba(60,50,40,0.7) 100%);
  z-index: 1;
}
.hero__content {
  position: relative;
  z-index: 2;
  padding: 0 var(--container-padding);
  max-width: 800px;
}
.hero__eyebrow {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 0.78rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 24px;
}
.hero__title {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: clamp(2.8rem, 7vw, 5rem);
  line-height: 1.1;
  color: var(--color-white);
  margin-bottom: 28px;
}
.hero__subtitle {
  font-weight: 300;
  font-size: 1.1rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.7);
  max-width: 560px;
  margin: 0 auto 48px;
}

/* ============================================
   ABOUT
   ============================================ */
.about { background: var(--color-warm-white); }
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 80px;
  align-items: start;
}
.about__image-placeholder {
  width: 100%;
  aspect-ratio: 3/4;
  background: var(--color-cream);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--color-gray-light);
  border: 1px solid var(--color-cream-dark);
}
.about__photo {
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 3/4;
  border: 8px solid var(--color-cream);
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}
.about__copy p {
  margin-bottom: 20px;
  color: var(--color-gray);
  font-size: 0.95rem;
}
.about__mission {
  margin-top: 32px;
  padding: 32px;
  border-left: 2px solid var(--color-gold);
  background: var(--color-cream);
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-style: italic;
  line-height: 1.7;
  color: var(--color-black);
}

/* ============================================
   SERVICES
   ============================================ */
.services { background: var(--color-cream); }
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}
.service-card {
  background: var(--color-white);
  padding: 48px 36px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  transition: var(--transition);
  border: 1px solid transparent;
}
.service-card:hover {
  border-color: var(--color-gold);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.06);
}
.service-card--featured {
  border: 1px solid var(--color-gold);
}
.service-card__badge {
  position: absolute;
  top: -12px;
  background: var(--color-gold);
  color: var(--color-white);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 6px 20px;
}
.service-card__icon {
  font-size: 1.8rem;
  color: var(--color-gold);
  margin-bottom: 24px;
}
.service-card__title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 1.5rem;
  margin-bottom: 8px;
}
.service-card__format {
  font-size: 0.78rem;
  color: var(--color-gray);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.service-card__desc {
  font-size: 0.9rem;
  color: var(--color-gray);
  margin-bottom: 32px;
  line-height: 1.7;
}
.service-card__pricing {
  width: 100%;
  margin-bottom: 32px;
}
.price-tier {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-cream);
  font-size: 0.88rem;
}
.price-tier--featured {
  border-bottom-color: var(--color-gold);
}
.price-tier__amount {
  font-weight: 600;
  color: var(--color-gold-dark);
}
.service-card .btn { margin-top: auto; }

/* Rewire Framework */
.rewire-framework {
  width: 100%;
  margin-bottom: 32px;
  text-align: left;
}
.rewire-week {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-cream);
}
.rewire-week__letter {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-gold);
  min-width: 28px;
  line-height: 1;
  padding-top: 2px;
}
.rewire-week strong {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.rewire-week p {
  font-size: 0.82rem;
  color: var(--color-gray);
  margin-top: 2px;
}

/* ============================================
   AUDIENCE
   ============================================ */
.audience { background: var(--color-warm-white); }
.audience__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}
.audience-card {
  padding: 48px;
  background: var(--color-white);
  border: 1px solid var(--color-cream-dark);
  transition: var(--transition);
}
.audience-card:hover {
  border-color: var(--color-gold);
  box-shadow: 0 12px 40px rgba(0,0,0,0.04);
}
.audience-card__number {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 300;
  color: var(--color-cream-dark);
  margin-bottom: 16px;
}
.audience-card__title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 1.35rem;
  margin-bottom: 12px;
}
.audience-card__desc {
  font-size: 0.9rem;
  color: var(--color-gray);
  line-height: 1.7;
}

/* ============================================
   TESTIMONIALS
   ============================================ */
.testimonials { background: var(--color-cream); }
.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}
.testimonial-card {
  background: var(--color-white);
  padding: 44px 36px;
  transition: var(--transition);
}
.testimonial-card:hover {
  box-shadow: 0 12px 40px rgba(0,0,0,0.06);
}
.testimonial-card__stars {
  color: var(--color-gold);
  font-size: 0.85rem;
  letter-spacing: 4px;
  margin-bottom: 20px;
}
.testimonial-card__quote {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-style: italic;
  line-height: 1.7;
  color: var(--color-black);
  margin-bottom: 28px;
}
.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: 16px;
}
.testimonial-card__avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-cream);
  border: 1px solid var(--color-cream-dark);
  flex-shrink: 0;
}
.testimonial-card__author strong {
  font-size: 0.85rem;
  font-weight: 600;
}
.testimonial-card__author p {
  font-size: 0.78rem;
  color: var(--color-gray);
}

/* ============================================
   CONTACT
   ============================================ */
.contact {
  background: var(--color-black);
  color: var(--color-white);
  text-align: center;
}
.contact .section__eyebrow { color: var(--color-gold); }
.contact .section__title { color: var(--color-white); }
.contact__inner { max-width: 640px; margin: 0 auto; }
.contact__text {
  color: rgba(255,255,255,0.6);
  margin-bottom: 40px;
  font-size: 1rem;
  line-height: 1.8;
}
.contact__buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.contact__buttons .btn--outline {
  border-color: rgba(255,255,255,0.3);
  color: var(--color-white);
}
.contact__buttons .btn--outline:hover {
  border-color: var(--color-gold);
  background: var(--color-gold);
}
.contact__email {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.1em;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--color-black);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 32px 0;
}
.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer__logo {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.08em;
}
.footer__copy {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.3);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .services__grid { grid-template-columns: 1fr; max-width: 520px; margin-left: auto; margin-right: auto; }
  .about__grid { grid-template-columns: 1fr; gap: 48px; }
  .about__image-placeholder { max-width: 400px; }
  .about__photo { max-width: 400px; margin: 0 auto; }
}

@media (max-width: 768px) {
  .section { padding: 80px 0; }
  .nav__toggle { display: flex; }
  .nav__links {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(26,26,26,0.98);
    flex-direction: column;
    justify-content: center;
    gap: 32px;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
  }
  .nav__links.open {
    opacity: 1;
    pointer-events: all;
  }
  .nav__links a { color: var(--color-white) !important; font-size: 1rem; }
  .lang-toggle { color: rgba(255,255,255,0.7) !important; }

  .audience__grid { grid-template-columns: 1fr; }
  .testimonials__grid { grid-template-columns: 1fr; max-width: 480px; margin-left: auto; margin-right: auto; }
  .footer__inner { flex-direction: column; gap: 12px; text-align: center; }
}

@media (max-width: 480px) {
  :root { --container-padding: 20px; }
  .hero__title { font-size: 2.4rem; }
  .audience-card { padding: 32px 24px; }
  .service-card { padding: 36px 24px; }
  .contact__buttons { flex-direction: column; align-items: center; }
  .contact__buttons .btn { width: 100%; max-width: 280px; }
}