/* ============================================================
   SEREIN HOUSE — ELEVATION LAYER
   Loaded AFTER style.css. Warm, soft, sensory escalation:
   breathing detail, soft-bloom hovers, thermal-breath parallax,
   authoritative-yet-calm typography. World-class spa standard.
   ============================================================ */

/* ─── 0. Token enrichment ───────────────────── */
:root {
  /* Warmer, deeper neutrals + layered paper */
  --paper: #FBF8F3;
  --ivory: #F6F1EA;
  --stone: #EDE7DD;
  --sand: #E2D9CC;
  --taupe: #C2B2A0;
  --charcoal: #322F2A;
  --dark: #221F1B;

  /* Accent duality: warm bronze + cool sage — a spa breath */
  --bronze: #9A7F62;
  --bronze-deep: #7E6549;
  --bronze-light: #BBA079;
  --sage: #71807A;
  --sage-deep: #56635E;
  --sage-light: #93A099;
  --glow-warm: rgba(154, 127, 98, 0.16);
  --glow-bloom: rgba(187, 160, 121, 0.34);

  --text-primary: #2A2723;
  --text-secondary: #57514A;
  --text-muted: #8C847A;

  /* Soft elevation (warm-tinted, diffuse — spa light) */
  --shadow-soft: 0 2px 10px rgba(50, 40, 28, 0.04);
  --shadow-lift: 0 18px 50px rgba(50, 40, 28, 0.10);
  --shadow-bloom: 0 24px 60px rgba(126, 101, 73, 0.16);

  --radius: 10px;
  --radius-lg: 16px;

  --ease-soft: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.4, 0.5, 1);
  --section-py: clamp(5rem, 9vw, 8.5rem);
}

body { background-color: var(--paper); }
::selection { background: var(--bronze-light); color: #fff; }

/* ─── 1. Film grain (injected) ──────────────── */
.sn-grain {
  position: fixed; inset: 0; z-index: 9998; pointer-events: none;
  opacity: 0.04; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 160px;
}

/* ─── 2. Typography — calm authority ────────── */
h1 { font-weight: 400; letter-spacing: -0.02em; }
h2 { font-weight: 400; letter-spacing: -0.018em; font-size: clamp(1.9rem, 3.6vw, 3.25rem); }
h1 em, h2 em, .lead em {
  font-style: italic; font-weight: 500; color: var(--bronze-deep);
}
.section--dark h1 em, .section--dark h2 em, .hero h1 em, .cta-banner h2 em { color: var(--bronze-light); }

/* Eyebrow gains a centered hairline tick */
.eyebrow {
  letter-spacing: 0.24em; color: var(--bronze-deep);
  display: inline-flex; align-items: center; gap: 0.7rem;
}
.eyebrow::before, .eyebrow::after {
  content: ""; width: 18px; height: 1px; background: currentColor; opacity: 0.5;
}
.section-header .eyebrow, .hero .eyebrow, .page-header .eyebrow, .cta-banner .eyebrow { color: var(--bronze); }
.section--dark .eyebrow, .hero .eyebrow, .cta-banner .eyebrow { color: var(--bronze-light); }
/* left-aligned eyebrows (split content) drop the trailing tick */
.split__content .eyebrow::after { display: none; }

.lead { font-size: 1.15rem; line-height: 1.75; color: var(--text-secondary); }

/* ─── 3. Buttons — clear hierarchy + magnetic ── */
.btn {
  border-radius: 999px; letter-spacing: 0.12em; padding: 16px 36px;
  overflow: hidden; isolation: isolate;
  transition: transform 0.4s var(--ease-soft), background-color var(--duration) var(--ease-soft),
              color var(--duration) var(--ease-soft), border-color var(--duration) var(--ease-soft),
              box-shadow var(--duration) var(--ease-soft);
}
.btn[data-magnetic] { transform: translate(var(--mx,0), var(--my,0)); }
.btn::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.25) 50%, transparent 70%);
  transform: translateX(-130%); transition: transform 0.8s var(--ease-soft);
}
.btn:hover::before { transform: translateX(130%); }
.btn--primary { background: var(--bronze-deep); border-color: var(--bronze-deep); color: #fff; box-shadow: var(--shadow-soft); }
.btn--primary:hover { background: var(--bronze); border-color: var(--bronze); transform: translateY(-3px); box-shadow: var(--shadow-bloom); }
.btn--secondary { border-color: var(--taupe); color: var(--text-primary); }
.btn--secondary:hover { border-color: var(--bronze); color: var(--bronze-deep); transform: translateY(-3px); background: rgba(154,127,98,0.05); }
.btn--light { background: rgba(255,255,255,0.14); border-color: rgba(255,255,255,0.28); backdrop-filter: blur(4px); }
.btn--light:hover { background: #fff; color: var(--dark); transform: translateY(-3px); box-shadow: var(--shadow-bloom); }
.btn--dark-secondary:hover { transform: translateY(-3px); }

.link-arrow { color: var(--bronze-deep); }
.link-arrow::after { content: "\2192"; transition: transform var(--duration) var(--ease-soft); }
.link-arrow:hover { color: var(--bronze); }

/* ─── 4. Navigation ─────────────────────────── */
.site-nav__link::after { background: var(--bronze); height: 1.5px; }
.site-nav__logo::after {
  content: ""; display: inline-block; width: 5px; height: 5px; margin-left: 6px;
  border-radius: 50%; background: var(--bronze); vertical-align: middle; transform: translateY(-2px);
}

/* ─── 5. HERO — let the image breathe ───────── */
.hero { background-color: var(--dark); }
.hero__bg {
  opacity: 0.9;
  filter: brightness(0.78) contrast(1.05) saturate(0.96) sepia(0.06);
  animation: snZoom 22s var(--ease-soft) forwards;
}
@keyframes snZoom { from { transform: scale(1.05); } to { transform: scale(1.13); } }
.hero__overlay {
  background:
    radial-gradient(64% 48% at 50% 52%, rgba(34,31,27,0.42), transparent 72%),
    radial-gradient(120% 80% at 50% 120%, rgba(34,31,27,0.62), transparent 60%),
    linear-gradient(180deg, rgba(34,31,27,0.5) 0%, rgba(34,31,27,0.12) 35%, rgba(34,31,27,0.3) 70%, rgba(34,31,27,0.66) 100%);
}
.hero__content { max-width: 720px; }
.hero h1 { font-size: clamp(2.6rem, 6.2vw, 5.25rem); font-weight: 400; margin-bottom: var(--space-lg); text-shadow: 0 2px 40px rgba(20,16,12,0.45); }
.hero p { font-size: var(--text-md); max-width: 540px; text-shadow: 0 1px 20px rgba(20,16,12,0.5); }
.hero__rule {
  width: 0; height: 1px; margin: 0 auto var(--space-xl);
  background: linear-gradient(90deg, transparent, var(--bronze-light), transparent);
  transition: width 1.8s var(--ease-soft) 0.7s;
}
.is-loaded .hero__rule { width: 160px; }
/* gentle entrance */
.hero .eyebrow, .hero h1, .hero__rule, .hero p, .hero .btn-group {
  opacity: 0; transform: translateY(22px); animation: snIn 1.2s var(--ease-soft) forwards;
}
.hero .eyebrow { animation-delay: 0.3s; }
.hero h1 { animation-delay: 0.45s; }
.hero__rule { animation-delay: 0.58s; transform: none; }
.hero p { animation-delay: 0.66s; }
.hero .btn-group { animation-delay: 0.8s; }
@keyframes snIn { to { opacity: 1; transform: translateY(0); } }

/* ─── 6. Section rhythm + headers ───────────── */
.section--alt { background-color: var(--stone); }
.section-header { margin-bottom: var(--space-3xl); }
.section-header h2 { font-size: clamp(1.9rem, 3.4vw, 2.9rem); }
.page-header {
  background: radial-gradient(90% 130% at 50% -20%, var(--glow-warm), transparent 55%), var(--stone);
}

/* ─── 7. Pillars — quiet brass tick ─────────── */
.pillar { position: relative; padding-left: var(--space-lg); }
.pillar::before {
  content: ""; position: absolute; left: 0; top: 8px; width: 2px; height: 28px;
  background: linear-gradient(180deg, var(--bronze), transparent); border-radius: 2px;
}
.pillar h4 { font-size: var(--text-xl); }

/* ─── 8. Experience / journal cards — SOFT BLOOM ── */
.experience-card, .journal-card {
  border-radius: var(--radius); position: relative; isolation: isolate;
  transition: transform 0.5s var(--ease-soft), box-shadow 0.5s var(--ease-soft);
}
.experience-card { background: var(--ivory); }
.experience-card__img-wrap, .journal-card__img-wrap { border-radius: var(--radius) var(--radius) 0 0; }
.journal-card__img-wrap { border-radius: var(--radius); }
.experience-card__img, .journal-card__img { filter: brightness(0.97) saturate(0.96); }
/* soft warm halo that blooms from center on hover */
.experience-card::after, .journal-card::after {
  content: ""; position: absolute; inset: 0; z-index: -1; border-radius: inherit;
  background: radial-gradient(60% 60% at 50% 45%, var(--glow-bloom), transparent 70%);
  opacity: 0; transform: scale(0.6); transition: opacity 0.6s var(--ease-soft), transform 0.6s var(--ease-soft);
}
.experience-card:hover, .journal-card:hover { transform: translateY(-6px); }
.experience-card:hover { box-shadow: var(--shadow-lift); }
.experience-card:hover::after, .journal-card:hover::after { opacity: 1; transform: scale(1.15); }
.experience-card:hover .experience-card__img, .journal-card:hover .journal-card__img { filter: brightness(1.02) saturate(1.02); }
.journal-card__cat, .experience-card .link-arrow { color: var(--bronze-deep); }

/* ─── 9. Membership tiers — BREATHING gem ───── */
.tier-card { border-radius: var(--radius); transition: transform 0.5s var(--ease-soft), box-shadow 0.5s var(--ease-soft), border-color 0.5s var(--ease-soft); }
.tier-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lift); }
.tier-card--featured {
  border-color: var(--bronze); position: relative; overflow: hidden;
  background:
    radial-gradient(140% 90% at 100% 0%, rgba(187,160,121,0.14), transparent 55%),
    linear-gradient(180deg, rgba(226,217,204,0.5), var(--paper));
}
/* watermark texture only on featured */
.tier-card--featured::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0.5;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='90' height='90'%3E%3Cg fill='none' stroke='%239A7F62' stroke-width='0.6' opacity='0.10'%3E%3Ccircle cx='45' cy='45' r='30'/%3E%3Ccircle cx='45' cy='45' r='18'/%3E%3C/g%3E%3C/svg%3E");
  background-size: 90px;
}
/* breathing border */
.tier-card--featured { animation: breathe 4.5s ease-in-out infinite; }
@keyframes breathe {
  0%, 100% { box-shadow: 0 0 0 1px rgba(154,127,98,0.25), var(--shadow-soft); }
  50% { box-shadow: 0 0 0 1px rgba(154,127,98,0.7), 0 12px 40px rgba(126,101,73,0.14); }
}
.tier-card--featured::before { background: var(--bronze); }
.tier-card__price { color: var(--bronze-deep); }
.tier-card__benefit::before { content: "\2014"; color: var(--bronze); }

/* ─── 10. Split — overlap + warm frame ──────── */
.split { align-items: stretch; }
.split__img { filter: brightness(0.95) saturate(0.97); will-change: transform; }
.split__content { position: relative; background: var(--paper); }
.split__content::before {
  content: ""; position: absolute; left: 0; top: var(--space-3xl); bottom: var(--space-3xl); width: 2px;
  background: linear-gradient(180deg, var(--bronze), transparent);
}
@media (min-width: 1024px) {
  .split__content { padding-left: calc(var(--space-4xl) + var(--space-md)); }
}

/* ─── 11. Image band — framed, parallax ─────── */
.img-band { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-soft); }
.img-band img { will-change: transform; filter: brightness(0.96) saturate(0.97); }

/* ─── 12. Thermal features — warm hover ─────── */
.thermal-feature { border-radius: var(--radius); transition: transform 0.4s var(--ease-soft), border-color 0.4s var(--ease-soft), box-shadow 0.4s var(--ease-soft); }
.thermal-feature:hover { transform: translateY(-4px); border-color: var(--bronze-light); box-shadow: var(--shadow-soft); }
.thermal-feature__icon { color: var(--bronze); }
.thermal-price-card { border-radius: var(--radius); }

/* ─── 13. CTA banner — sauna glow ───────────── */
.cta-banner { background: linear-gradient(180deg, var(--charcoal), var(--dark)); }
.cta-banner::before {
  background: radial-gradient(ellipse 60% 80% at 50% 110%, rgba(187,160,121,0.20), transparent 70%);
}
.cta-banner::after {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(187,160,121,0.4), transparent);
}
.cta-banner h2 { font-size: clamp(2rem, 4vw, 3.25rem); }

/* ─── 14. Footer — a designed close ─────────── */
.site-footer { position: relative; }
.site-footer::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(187,160,121,0.35), transparent);
}
.site-footer__logo { font-size: var(--text-xl); }
.site-footer__logo::after {
  content: ""; display: inline-block; width: 5px; height: 5px; margin-left: 6px;
  border-radius: 50%; background: var(--bronze); vertical-align: middle; transform: translateY(-3px);
}
.site-footer__motto { color: var(--bronze-light); font-size: var(--text-sm); }
.site-footer__link:hover { color: var(--bronze-light); }

/* ─── 15. Reveal + stagger ──────────────────── */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 1s var(--ease-soft), transform 1s var(--ease-soft); }
.reveal--visible { opacity: 1; transform: none; }
[data-stagger] > * { opacity: 0; transform: translateY(24px); transition: opacity 0.9s var(--ease-soft), transform 0.9s var(--ease-soft); }
[data-stagger].reveal--visible > *, [data-stagger].is-revealed > * { opacity: 1; transform: none; }
[data-stagger].is-revealed > *:nth-child(1) { transition-delay: 0.05s; }
[data-stagger].is-revealed > *:nth-child(2) { transition-delay: 0.13s; }
[data-stagger].is-revealed > *:nth-child(3) { transition-delay: 0.21s; }
[data-stagger].is-revealed > *:nth-child(4) { transition-delay: 0.29s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
  .hero .eyebrow, .hero h1, .hero__rule, .hero p, .hero .btn-group,
  .reveal, [data-stagger] > * { opacity: 1 !important; transform: none !important; }
  .tier-card--featured { animation: none; }
}