/* ============================================================
   AI Smart Massage — Stylesheet
   Dark luxury theme with warm gold accents
   ============================================================ */

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

:root {
  --bg:          #0d0d0d;
  --bg-2:        #141414;
  --bg-3:        #1c1c1c;
  --text:        #f0ede8;
  --text-muted:  #8a8680;
  --gold:        #c9a044;
  --gold-light:  #e0b85a;
  --gold-dim:    rgba(201, 160, 68, 0.15);
  --border:      rgba(255, 255, 255, 0.07);
  --radius:      4px;
  --radius-lg:   10px;
  --transition:  0.3s ease;
  --font-serif:  'Cormorant Garamond', Georgia, serif;
  --font-sans:   'Inter', system-ui, sans-serif;
  --max-w:       1200px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-weight: 300;
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================================
   BUTTONS
   ============================================================ */

.btn {
  display: inline-block;
  padding: 13px 32px;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}

.btn--primary {
  background: var(--gold);
  color: #0d0d0d;
}
.btn--primary:hover {
  background: var(--gold-light);
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(255,255,255,0.3);
}
.btn--ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.btn--outline {
  background: transparent;
  color: var(--gold);
  border: 1px solid var(--gold);
  padding: 10px 24px;
  font-size: 0.78rem;
}
.btn--outline:hover {
  background: var(--gold);
  color: #0d0d0d;
}

/* ============================================================
   SECTION HEADERS
   ============================================================ */

.section-eyebrow {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 300;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 18px;
}

.section-sub {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 540px;
}

.section-header {
  margin-bottom: 64px;
}

.section-header::after {
  content: '';
  display: block;
  height: 1px;
  width: 120px;
  background: linear-gradient(90deg, var(--gold), transparent);
  margin-top: 28px;
}

.section-header--light::after {
  background: linear-gradient(90deg, var(--gold), transparent);
}

.section-header--light .section-title,
.section-header--light .section-eyebrow {
  color: var(--text);
}
.section-header--light .section-eyebrow {
  color: var(--gold);
}

/* ============================================================
   NAV
   ============================================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(13, 13, 13, 0.7);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  transition: background var(--transition), border-bottom var(--transition);
}

.nav.scrolled {
  background: rgba(13, 13, 13, 0.95);
  border-bottom: 1px solid var(--border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

.nav__logo {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 400;
  letter-spacing: 0.02em;
}

.nav__logo-ai {
  color: var(--gold);
}

.nav__logo-rest {
  color: var(--text);
}

.nav__links {
  display: flex;
  gap: 40px;
}

.nav__links a {
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color var(--transition);
}

.nav__links a:hover {
  color: var(--gold);
}

.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__burger span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--text);
  transition: all var(--transition);
}

.nav__burger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav__burger.open span:nth-child(2) { opacity: 0; }
.nav__burger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.nav__mobile {
  display: none;
  flex-direction: column;
  background: rgba(13, 13, 13, 0.98);
  border-top: 1px solid var(--border);
  padding: 24px;
  gap: 20px;
}

.nav__mobile.open {
  display: flex;
}

.nav__mobile-link {
  font-size: 1.1rem;
  font-family: var(--font-serif);
  color: var(--text-muted);
  transition: color var(--transition);
}

.nav__mobile-link:hover {
  color: var(--gold);
}

/* ============================================================
   HERO
   ============================================================ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background-image: url('images/hero-bg.jpg');
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg,
    rgba(10, 10, 10, 0.92) 0%,
    rgba(10, 10, 10, 0.6) 60%,
    rgba(10, 10, 10, 0.4) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  padding-top: 100px;
}

.hero__eyebrow-wrap {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}

.hero__eyebrow-line {
  display: block;
  width: 32px;
  height: 1px;
  background: var(--gold);
  flex-shrink: 0;
}

.hero__eyebrow {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0;
}

.hero__title em {
  font-style: italic;
  font-weight: 300;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 300;
  line-height: 1.1;
  color: var(--text);
  margin-bottom: 24px;
  max-width: 700px;
}

.hero__subtitle {
  font-size: 1.05rem;
  color: rgba(240, 237, 232, 0.7);
  max-width: 500px;
  margin-bottom: 44px;
  line-height: 1.7;
}

.hero__ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero__scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.hero__scroll-indicator span {
  display: block;
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, transparent, var(--gold));
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.2); }
}

/* ============================================================
   MARQUEE STRIP
   ============================================================ */

.strip {
  background: var(--gold);
  overflow: hidden;
  padding: 14px 0;
}

.strip__track {
  display: flex;
  align-items: center;
  gap: 28px;
  white-space: nowrap;
  animation: marquee 28s linear infinite;
  width: max-content;
}

.strip__track span {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #0d0d0d;
}

.strip__dot {
  width: 4px;
  height: 4px;
  background: rgba(13,13,13,0.4);
  border-radius: 50%;
  flex-shrink: 0;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ============================================================
   MODELS
   ============================================================ */

.models {
  padding: 120px 0;
  background: var(--bg);
}

.models__grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 20px;
}

/* Featured card spans 7 cols */
.model-card--featured {
  grid-column: span 7;
}

/* Second card spans 5 cols */
.model-card:nth-child(2) {
  grid-column: span 5;
}

/* 3rd and 4th: 6 cols each */
.model-card:nth-child(3) {
  grid-column: span 6;
}
.model-card:nth-child(4) {
  grid-column: span 6;
}

/* Wide card: full row */
.model-card--wide {
  grid-column: span 12;
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.model-card {
  background: rgba(20, 20, 20, 0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition), transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.4s ease;
  display: flex;
  flex-direction: column;
}

.model-card:hover {
  border-color: rgba(201, 160, 68, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
}

.model-card__image-wrap {
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}

/* Default image height for column cards */
.model-card:not(.model-card--wide) .model-card__image-wrap {
  height: auto;
  background: #0a0a0a;
}

/* Wide card image fills its half */
.model-card--wide .model-card__image-wrap {
  height: auto;
  background: #0a0a0a;
}

.model-card__image-wrap img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
  transition: transform 0.7s ease, filter 0.7s ease;
  filter: grayscale(0.6);
}

.model-card:hover .model-card__image-wrap img {
  transform: scale(1.04);
  filter: grayscale(0);
}

.model-card__badge {
  position: absolute;
  top: 16px;
  left: 16px;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 2px;
  background: var(--gold);
  color: #0d0d0d;
}

.model-card__badge--gold {
  background: #0d0d0d;
  color: var(--gold);
  border: 1px solid var(--gold);
}

.model-card__badge--dark {
  background: #0d0d0d;
  color: var(--text);
  border: 1px solid var(--border);
}

.model-card__body {
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.model-card__brand {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
}

.model-card__name {
  font-family: var(--font-serif);
  font-size: 1.9rem;
  font-weight: 400;
  color: var(--text);
  line-height: 1.2;
}

.model-card__desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.model-card__features {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 4px 0;
}

.model-card__features li {
  font-size: 0.82rem;
  color: var(--text-muted);
  padding-left: 16px;
  position: relative;
}

.model-card__features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 1px;
  background: var(--gold);
}

/* ============================================================
   WHY US
   ============================================================ */

.why {
  padding: 120px 0;
  background: var(--bg-3);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.why__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

.why__card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.why__icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(201, 160, 68, 0.3);
  color: var(--gold);
  transition: background var(--transition), color var(--transition);
}

.why__card:hover .why__icon {
  background: var(--gold);
  color: #0d0d0d;
}

.why__icon svg {
  width: 22px;
  height: 22px;
}

.why__card h3 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--text);
}

.why__card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.75;
}

/* ============================================================
   CONTACT
   ============================================================ */

.contact {
  padding: 120px 0;
  background: var(--bg);
}

.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.contact__desc {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.75;
  margin-bottom: 48px;
}

.contact__details {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact__detail {
  display: flex;
  align-items: flex-start;
  gap: 18px;
}

.contact__detail-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(201, 160, 68, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition);
}

.contact__detail:hover .contact__detail-icon {
  transform: scale(1.1);
}

.contact__detail svg {
  width: 18px;
  height: 18px;
  color: var(--gold);
}

.contact__detail div {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.contact__detail strong {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.contact__detail span,
.contact__detail p {
  font-size: 0.95rem;
  color: var(--text);
  line-height: 1.6;
}

.contact__detail a:hover {
  color: var(--gold);
}

.contact__map {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  height: 460px;
  position: relative;
}

.contact__map iframe {
  width: 100%;
  height: 100%;
  border: none;
  filter: grayscale(1) invert(0.85) hue-rotate(180deg);
}

.contact__map-cta {
  position: absolute;
  bottom: 20px;
  right: 20px;
  background: var(--gold);
  color: #0d0d0d;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 12px 24px;
  border: none;
  cursor: pointer;
  transition: background var(--transition);
  text-decoration: none;
  display: inline-block;
}

.contact__map-cta:hover {
  background: var(--gold-light);
  color: #0d0d0d;
}

/* ============================================================
   FOOTER
   ============================================================ */

.footer {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.5fr repeat(4, 1fr);
  gap: 48px;
  padding: 72px 24px 48px;
  max-width: var(--max-w);
  margin: 0 auto;
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer__brand p {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.7;
  max-width: 260px;
}

.footer__cols {
  display: contents;
}

.footer__cols > div {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__col-title {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 4px;
}

.footer__cols p {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.7;
}

.footer__cols a:hover {
  color: var(--gold);
}

.footer__bottom {
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 20px 24px;
}

.footer__bottom p {
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* ============================================================
   RESPONSIVE — Tablet (≤ 1024px)
   ============================================================ */

@media (max-width: 1024px) {
  .why__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px 48px;
  }

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

  .model-card--featured,
  .model-card:nth-child(2),
  .model-card:nth-child(3),
  .model-card:nth-child(4) {
    grid-column: span 1;
  }

  .model-card--wide {
    grid-column: span 2;
  }

  .contact__inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .footer__cols {
    display: contents;
  }
}

@media (max-width: 480px) {
  .footer__inner {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   RESPONSIVE — Mobile (≤ 640px)
   ============================================================ */

@media (max-width: 640px) {
  .nav__links {
    display: none;
  }

  .nav__burger {
    display: flex;
  }

  .hero__ctas {
    flex-direction: column;
    align-items: flex-start;
  }

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

  .model-card--featured,
  .model-card:nth-child(2),
  .model-card:nth-child(3),
  .model-card:nth-child(4),
  .model-card--wide {
    grid-column: span 1;
  }

  .model-card--wide {
    grid-template-columns: 1fr;
  }

  .model-card--wide .model-card__image-wrap {
    min-height: unset;
  }

  .why__grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

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

  .contact__map {
    height: 320px;
  }
}