/* =========================================================================
   FULLDOT — Tier S Styling
   Real grain texture · Sticky header blur · View Transitions · Lenis hooks
   ========================================================================= */

/* ── 1) LENIS SMOOTH SCROLL setup ───────────────────────────────────── */
html.has-lenis { scroll-behavior: auto !important; }
html.has-lenis,
html.has-lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-smooth [data-lenis-prevent] { overscroll-behavior: contain; }
.lenis.lenis-stopped { overflow: hidden; }

/* ── 2) REAL GRAIN OVERLAY (inline SVG noise) ────────────────────────
   Subtle paper grain on the whole page (replaces flat CSS gradient).
   Uses feTurbulence for true procedural noise. Mix-blend overlay so it
   integrates with existing paper colors without dimming.                  */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9998;
  opacity: 0.045;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='1.4' numOctaves='2' stitchTiles='stitch' seed='7'/><feColorMatrix values='0 0 0 0 0.34  0 0 0 0 0.24  0 0 0 0 0.14  0 0 0 0.9 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  background-size: 220px 220px;
}
@media (prefers-reduced-motion: reduce) {
  body::before { opacity: 0.025; }
}
@media (max-width: 720px) {
  body::before { opacity: 0.03; } /* dimmer on mobile (battery + readability) */
}

/* ── 3) HEADER ON SCROLL — glass blur ────────────────────────────────── */
.nav {
  transition:
    background-color 480ms var(--ease-glide, ease),
    backdrop-filter  480ms var(--ease-glide, ease),
    box-shadow       480ms var(--ease-glide, ease),
    border-color     480ms var(--ease-glide, ease);
}
.nav.nav--scrolled {
  background: rgba(245, 241, 232, 0.72);
  -webkit-backdrop-filter: saturate(1.4) blur(18px);
          backdrop-filter: saturate(1.4) blur(18px);
  box-shadow:
    0 1px 0 rgba(var(--ink-rgb, 10,31,61), 0.06),
    0 12px 32px -16px rgba(var(--ink-rgb, 10,31,61), 0.18);
  border-bottom-color: transparent;
}
@supports not (backdrop-filter: blur(1px)) {
  .nav.nav--scrolled { background: rgba(245, 241, 232, 0.96); }
}

/* ── 4) VIEW TRANSITIONS API — soft cross-fade ───────────────────────── */
@supports (view-transition-name: root) {
  ::view-transition-old(root),
  ::view-transition-new(root) {
    animation-duration: 360ms;
    animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  }
  ::view-transition-old(root) {
    animation-name: fd-fade-out;
  }
  ::view-transition-new(root) {
    animation-name: fd-fade-in;
  }
  @keyframes fd-fade-out {
    from { opacity: 1; transform: translateY(0) scale(1); }
    to   { opacity: 0; transform: translateY(-8px) scale(0.998); }
  }
  @keyframes fd-fade-in {
    from { opacity: 0; transform: translateY(12px) scale(1.002); filter: blur(6px); }
    to   { opacity: 1; transform: translateY(0)   scale(1);     filter: blur(0); }
  }

  /* Shared element transitions for hero portrait → instructor page */
  .story__portrait img,
  .page-hero__portrait img,
  [data-vt="instructor-photo"] {
    view-transition-name: instructor-photo;
    contain: paint;
  }

  /* Reduce motion: drop the fancy transition */
  @media (prefers-reduced-motion: reduce) {
    ::view-transition-old(root),
    ::view-transition-new(root) { animation: none; }
  }
}

/* ── 5) GSAP REVEAL FALLBACK — when Tier-S didn't initialize (JS off, libs blocked,
   or CDN failed), force [data-reveal] visible so users still see the content.
   When tier-s.js loads successfully it adds .tier-s-ready and GSAP takes over.   */
html:not(.tier-s-ready) [data-reveal] { opacity: 1; transform: none; filter: none; }

/* ── 6) DISPLAY HEADINGS — opsz breath baseline ─────────────────────── */
.hero__h1,
.section-head__title,
.h-section__title,
.page-hero__title,
.story__pull {
  font-variation-settings: "opsz" 144; /* default if JS doesn't run */
  transition: font-variation-settings 1200ms var(--ease-glide, ease);
}

/* ── 7) MODULE 3D HOVER (depth on hover, desktop only) ───────────────── */
@media (hover: hover) and (pointer: fine) {
  .module {
    transform-style: preserve-3d;
    transition:
      transform 420ms var(--ease-glide, ease),
      box-shadow 420ms var(--ease-glide, ease),
      background-color 420ms var(--ease-glide, ease);
  }
  .module:hover {
    transform: translateY(-3px) rotateX(2deg);
    box-shadow:
      0 14px 30px -14px rgba(var(--ink-rgb, 10,31,61), 0.32),
      0 4px 12px -4px rgba(var(--copper-rgb, 200,155,108), 0.28);
  }
}

/* ── 8) BTN: refined liquid ripple on click (no GSAP needed) ─────────── */
.btn { position: relative; overflow: hidden; isolation: isolate; }
.btn::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--x, 50%) var(--y, 50%),
    rgba(255, 255, 255, 0.35) 0%, transparent 36%);
  opacity: 0;
  transition: opacity 600ms var(--ease-glide, ease);
  pointer-events: none;
  z-index: -1;
}
.btn:hover::after { opacity: 1; }

/* ── 9) PERSONA / CASE / SERVICE — depth on hover (desktop) ─────────── */
@media (hover: hover) and (pointer: fine) {
  .persona,
  .case-card,
  .service,
  .plan,
  .lcard {
    transition:
      transform 480ms var(--ease-glide, ease),
      box-shadow 480ms var(--ease-glide, ease),
      border-color 480ms var(--ease-glide, ease);
    will-change: transform;
  }
  .persona:hover,
  .case-card:hover,
  .service:hover,
  .plan:hover,
  .lcard:hover {
    transform: translateY(-6px);
    box-shadow:
      0 28px 56px -24px rgba(var(--ink-rgb, 10,31,61), 0.22),
      0 8px 18px -6px rgba(var(--copper-rgb, 200,155,108), 0.18);
  }
}

/* ── 10) IMAGE / SVG — golden cinema border on focus (case + scene) ─── */
.scene-gallery__item,
.photo--svg {
  position: relative;
}
.scene-gallery__item::before,
.photo--svg::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(var(--copper-rgb, 200,155,108), 0);
  border-radius: inherit;
  pointer-events: none;
  z-index: 3;
  transition: border-color 480ms var(--ease-glide, ease),
              inset       480ms var(--ease-glide, ease);
}
@media (hover: hover) and (pointer: fine) {
  .scene-gallery__item:hover::before,
  .photo--svg:hover::before {
    border-color: rgba(var(--copper-rgb, 200,155,108), 0.55);
    inset: 6px;
    border-radius: calc(var(--radius-md, 12px) - 4px);
  }
}

/* ════════════════════════════════════════════════════════════════════
   ATMOSPHERE LAYER
   Letter reveal · Number ink-draw · Ambient tint · Case cinema
   ════════════════════════════════════════════════════════════════════ */

/* ── ATMO 1) Letter-by-letter reveal ────────────────────────────────── */
.hero__h1 .ltr,
.page-hero__title .ltr {
  display: inline-block;
  opacity: 0;
  transform: translateY(0.6em) rotate(2deg);
  filter: blur(8px);
  transition:
    opacity   900ms cubic-bezier(0.2, 0.7, 0.2, 1) var(--ltr-delay, 0ms),
    transform 900ms cubic-bezier(0.2, 0.7, 0.2, 1) var(--ltr-delay, 0ms),
    filter    900ms cubic-bezier(0.2, 0.7, 0.2, 1) var(--ltr-delay, 0ms);
}
.fd-letters-in .ltr {
  opacity: 1;
  transform: translateY(0) rotate(0);
  filter: blur(0);
}
/* em inside heading: keep italic but inherit transitions */
.hero__h1 em .ltr,
.page-hero__title em .ltr {
  font-style: italic;
}
/* Reduced motion: instant */
@media (prefers-reduced-motion: reduce) {
  .hero__h1 .ltr,
  .page-hero__title .ltr {
    opacity: 1; transform: none; filter: none; transition: none;
  }
}

/* ── ATMO 2) Number ink-draw ────────────────────────────────────────── */
[data-count].fd-ink-drawing {
  position: relative;
  display: inline-block;
  background: linear-gradient(
    100deg,
    var(--bronze-deep, #6F5530) 0%,
    var(--copper-glow, #C89B6C) 40%,
    var(--copper-bright, #DAB382) 70%,
    var(--bronze-deep, #6F5530) 100%);
  background-size: 220% 100%;
  background-position: 100% 0;
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
          color: transparent;
  animation: fd-ink-flow 1800ms cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}
[data-count].fd-ink-done {
  -webkit-text-fill-color: currentColor;
          color: inherit;
  background: none;
  animation: none;
}
@keyframes fd-ink-flow {
  0%   { background-position: 100% 0; }
  100% { background-position: 0%   0; }
}
/* Underline ink stroke — drawn below the number after counting finishes */
[data-count]::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -4px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--copper-glow, #C89B6C), transparent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 1100ms cubic-bezier(0.2, 0.8, 0.2, 1) 400ms;
}
[data-count].fd-ink-done::after { transform: scaleX(1); }
@media (prefers-reduced-motion: reduce) {
  [data-count].fd-ink-drawing { animation: none; -webkit-text-fill-color: currentColor; color: inherit; background: none; }
  [data-count]::after { display: none; }
}

/* ── ATMO 3) Ambient overlay (body-level tint) ──────────────────────── */
.fd-ambient {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-color: var(--paper, #F5F1E8);
  transition: background-color 1800ms cubic-bezier(0.4, 0.0, 0.2, 1);
  mix-blend-mode: normal;
  opacity: 0.45;
}
@media (prefers-reduced-motion: reduce) { .fd-ambient { transition: none; opacity: 0; } }

/* ── ATMO 4) Case cinema (pin-scroll chapters) ──────────────────────── */
.cinema {
  position: relative;
}
.cinema__stage {
  position: relative;
  min-height: 100vh;
  display: grid;
  place-items: center;
  overflow: hidden;
}
.cinema__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}
.cinema__bg svg,
.cinema__bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}
.cinema__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,
    rgba(10, 31, 61, 0.35) 0%,
    rgba(10, 31, 61, 0.62) 50%,
    rgba(10, 31, 61, 0.88) 100%);
  pointer-events: none;
}
.cinema__inner {
  position: relative;
  z-index: 2;
  max-width: 880px;
  padding: clamp(80px, 14vh, 160px) clamp(20px, 5vw, 60px);
  color: var(--paper, #F5F1E8);
  text-align: left;
}
.cinema__eyebrow {
  font-family: var(--font-mono, ui-monospace, monospace);
  font-size: 13px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--copper-glow, #C89B6C);
  margin-bottom: var(--space-3, 16px);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 800ms ease 200ms, transform 800ms ease 200ms;
}
.cinema__title {
  font-family: var(--font-display, "Fraunces", serif);
  font-size: clamp(2rem, 4.2vw, 3.6rem);
  font-weight: 500;
  line-height: 1.15;
  font-variation-settings: "opsz" 144;
  margin: 0 0 var(--space-4, 24px);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 1100ms ease 320ms, transform 1100ms ease 320ms;
}
.cinema__title em {
  font-style: italic;
  color: var(--copper-bright, #DAB382);
  background: linear-gradient(120deg,
    var(--copper-bright, #DAB382),
    var(--coral, #E89F71));
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
}
.cinema__body {
  font-size: clamp(1rem, 1.4vw, 1.18rem);
  line-height: 1.75;
  max-width: 580px;
  color: rgba(245, 241, 232, 0.85);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 1100ms ease 480ms, transform 1100ms ease 480ms;
}
.cinema__meta {
  display: flex;
  gap: var(--space-5, 32px);
  margin-top: var(--space-5, 32px);
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 1100ms ease 640ms, transform 1100ms ease 640ms;
}
.cinema__meta dt {
  font-family: var(--font-mono, ui-monospace, monospace);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(245, 241, 232, 0.5);
  margin-bottom: 4px;
}
.cinema__meta dd {
  font-family: var(--font-display, "Fraunces", serif);
  font-size: 1.4rem;
  font-weight: 500;
  font-variation-settings: "opsz" 96;
  margin: 0;
  color: var(--paper, #F5F1E8);
}
/* Active state — fired by GSAP ScrollTrigger pin */
.cinema__stage.is-active .cinema__eyebrow,
.cinema__stage.is-active .cinema__title,
.cinema__stage.is-active .cinema__body,
.cinema__stage.is-active .cinema__meta {
  opacity: 1;
  transform: translateY(0);
}
/* Between-chapter dim */
.cinema__progress {
  position: fixed;
  top: 50%;
  right: clamp(16px, 3vw, 40px);
  transform: translateY(-50%);
  z-index: 50;
  display: flex;
  flex-direction: column;
  gap: 12px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 600ms ease;
}
.cinema--running ~ .cinema__progress,
body.cinema-running .cinema__progress { opacity: 1; pointer-events: auto; }
.cinema__progress span {
  width: 2px; height: 32px;
  background: rgba(245, 241, 232, 0.18);
  display: block;
  transition: background-color 480ms ease, height 480ms ease;
}
.cinema__progress span.is-current {
  background: var(--copper-bright, #DAB382);
  height: 48px;
}
@media (max-width: 720px) {
  .cinema__stage { min-height: 92vh; }
  .cinema__progress { display: none; }
}

/* ── 11) MOBILE / REDUCED — disable heavy effects ───────────────────── */
@media (max-width: 720px) {
  .nav.nav--scrolled {
    -webkit-backdrop-filter: blur(12px);
            backdrop-filter: blur(12px);
  }
}
@media (prefers-reduced-motion: reduce) {
  .nav { transition: none; }
  body::before { animation: none; }
  .module, .persona, .case-card, .service, .plan, .lcard {
    transition: none !important;
  }
}