/* Photo Album — skin recipes (spec T002 §2) + reveal utilities (T003).
   Component classes are the SITE's own (.card = photo card), so silk's generic
   .card/.primary-button classes are intentionally NOT ported.
   All values derive from the 9 roles via color-mix → light/dark toggle recolors everything.
   Loaded before main.css (layout priority stays with main.css). */

/* ---- VINTAGE = elegant: outline card + top-highlight button ---- */
html[data-theme="vintage"] .card {
  background: var(--frame);
  border: 1px solid color-mix(in srgb, var(--foreground) 12%, transparent);
  box-shadow: var(--frame-shadow);
}
html[data-theme="vintage"] .btn {
  background: linear-gradient(color-mix(in srgb, var(--foreground) 14%, transparent) 0%, transparent 59.26%),
              var(--primary-cta);
  color: var(--primary-cta-text);
  box-shadow: inset 0 1px 0 0 color-mix(in srgb, var(--foreground) 30%, transparent),
              0 2px 4px -1px color-mix(in srgb, var(--primary-cta) 35%, transparent),
              0 10px 20px -8px color-mix(in srgb, var(--primary-cta) 45%, transparent);
}

/* ---- MODERN = minimal: flat, hairline, no shadow ---- */
html[data-theme="modern"] .card {
  background: var(--frame);
  border: var(--frame-hairline);
  box-shadow: 0 1px 2px rgba(0,0,0,.06);
}
html[data-theme="modern"] .btn { background: var(--primary-cta); color: var(--primary-cta-text); box-shadow: none; }

/* ---- shared (both skins) ---- */
/* pair fix 2026-08-23 (#8): ghost = true OUTLINE in both skins. The skin base rule
   (html[data-theme] .btn, spec 0,2,1) out-scored .btn.ghost (0,2,0), so ghosts
   rendered as filled CTA + a 1px accent ring (vintage: + inset highlight shadow).
   Bumped to (0,3,1) to win; box-shadow cleared. Supersedes fix #7's hdr override. */
/* #9: padding = .btn base minus the 1px border, so ghost == solid height exactly */
.btn.ghost { background: transparent; color: var(--foreground);
  border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent); box-shadow: none;
  padding: calc(.45rem - 1px) 1rem; }
html[data-theme] .btn.ghost { background: transparent; color: var(--foreground);
  border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent); box-shadow: none;
  padding: calc(.45rem - 1px) 1rem; }
/* hover: ghost fills like a solid .btn (CTA bg + CTA text) — bumped (0,3,2) to win */
.btn.ghost:hover { background: var(--primary-cta); border-color: var(--primary-cta); color: var(--primary-cta-text); }
html[data-theme] .btn.ghost:hover { background: var(--primary-cta); border-color: var(--primary-cta); color: var(--primary-cta-text); }
input, select, textarea {
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  border-radius: calc(var(--radius) - 2px);   /* vintage 14px, modern 2px */
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary-cta); }
.lb-panel { background: color-mix(in srgb, var(--card) 92%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent); border-radius: var(--radius); }
.mod-item, .modal-card, .auth .frame { background: var(--card);
  border: 1px solid color-mix(in srgb, var(--accent) 20%, transparent); }
.modal-card, .auth .frame { box-shadow: var(--frame-shadow); border-radius: var(--radius); }
.dz { border: 2px dashed color-mix(in srgb, var(--accent) 45%, transparent); border-radius: var(--radius); }
.hdr-inner { background: color-mix(in srgb, var(--card) 82%, transparent);
  backdrop-filter: blur(14px);
  border: 1px solid color-mix(in srgb, var(--foreground) 10%, transparent);
  box-shadow: 0 12px 32px -18px color-mix(in srgb, var(--foreground) 30%, transparent); }
.chip { background: var(--chip-bg); color: var(--primary-cta); }   /* was --accent */

/* Accent-font slot (vintage Caveat), used SPARINGLY — exactly these three: */
.story, .lb-by, .decade-head .dec-meta { font-family: var(--font-accent); }

/* ---- Reveal utilities (motion.js sets hidden state with these + gsap.set, spec §3) ----
   .silk-hidden       → block reveal hidden state: opacity 0, y 20 (slide-up)
   .silk-hidden-blur  → fade-blur hidden state: opacity 0, blur(10px)
   .silk-word-mask    → overflow-hidden wrapper per word (word-stagger)
   .silk-word         → the word span, animated y:100% → 0
   foundation.css's reduced-motion block !important-overs these (content always visible). */
.silk-hidden { opacity: 0; transform: translateY(20px); }
.silk-hidden-blur { opacity: 0; filter: blur(10px); }
.silk-word-mask { display: inline-block; overflow: hidden; vertical-align: bottom; }
.silk-word { display: inline-block; will-change: transform; }

/* ---- .curtain-nav — fullscreen curtain menu (spec §V7, port of silk NavbarFullscreen).
   Markup built in app.js shell() (appended to <body>, survives #app clears);
   motion.js toggles .open, sets per-link transition-delay inline (open: 0.3+i*0.05s,
   close: (n-1-i)*0.05s → bottom-up exit), locks body overflow, closes on Escape.
   z-index 80: above grain 60 + lightbox 50, below story 90. The header pill rises
   above it while open so the toggle stays reachable. */
.curtain-nav {
  position: fixed; inset: 0; z-index: 80;
  pointer-events: none;
  visibility: hidden;
}
.curtain-nav.open { visibility: visible; }
.curtain-sheet {
  position: absolute; inset: 0;
  background: var(--foreground);
  clip-path: polygon(0% 0%, 100% 0%, 100% 0%, 0% 0%);
  transition: clip-path 700ms cubic-bezier(0.9, 0, 0.1, 1);
}
.curtain-nav.open .curtain-sheet { clip-path: polygon(0% 0%, 100% 0%, 100% 100%, 0% 100%); }
.curtain-links {
  width: var(--width-content-width); max-width: 90vw;
  margin: 0 auto; height: 100%;
  display: flex; flex-direction: column; justify-content: center;
  pointer-events: auto;
}
.curtain-link {
  display: block; overflow: hidden;
  border-top: 1px solid color-mix(in srgb, var(--background) 20%, transparent);
  color: var(--background); text-decoration: none;
}
.curtain-link:last-child { border-bottom: 1px solid color-mix(in srgb, var(--background) 20%, transparent); }
.curtain-link .cl-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: .45rem 0;
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(var(--text-7xl), 9vw, var(--text-9xl));
  line-height: 1;
  transform: translateY(100%);
  transition: transform 500ms cubic-bezier(0.7, 0, 0.3, 1);
}
.curtain-nav.open .curtain-link .cl-inner { transform: translateY(0); }
.curtain-link .cl-label { display: inline-block; transition: margin-left 300ms cubic-bezier(0.25, 0.46, 0.45, 0.94); }
.curtain-link:hover .cl-label { margin-left: .5rem; }
.curtain-link .cl-arrow { display: inline-block; font-size: .7em; transition: transform 300ms cubic-bezier(0.25, 0.46, 0.45, 0.94); }
.curtain-link:hover .cl-arrow { transform: rotate(45deg); }

/* hamburger toggle (in .hdr-inner, rebuilt per render; motion.js delegates the click) */
.curtain-toggle {
  display: inline-flex; flex-direction: column; align-items: center; justify-content: center;
  width: 2.5rem; height: 2.5rem;
  border: 0; background: transparent; padding: 0; cursor: pointer;
}
.curtain-toggle span {
  display: block; width: 12px; height: 1px;
  background: var(--foreground);
  transition: transform 300ms cubic-bezier(0.25, 0.46, 0.45, 0.94), background-color 700ms;
}
.curtain-toggle span:first-child { transform: translateY(-0.25rem); }
.curtain-toggle span:last-child { transform: translateY(0.25rem); }
body.curtain-open .hdr { z-index: 81; }
/* pair fix 2026-08-23: the toggle sits on the .hdr-inner PILL (z 81, above the z-80 sheet),
   NOT on the curtain sheet — so the X keeps var(--foreground) (pill is always var(--card)-ish).
   The old background: var(--background) flip made the X ~invisible in both modes
   (light: white X on white pill; dark: black X on black pill). */
body.curtain-open .curtain-toggle span:first-child { transform: rotate(45deg); }
body.curtain-open .curtain-toggle span:last-child { transform: rotate(-45deg); }

/* ---- .site-footer — big-brand footer (spec §V15).
   Built in app.js shell() only (not bare()). The wordmark is AutoFillText:
   motion.js measures canvas @100px and sets font-size inline (line-height .8 when
   no descenders), re-run on ResizeObserver. Reveal (clip-path inset) is armed by
   motion.js on shell-ready; CSS here is layout only. */
.site-footer {
  margin-top: 6rem; padding: 4rem 1.25rem 3rem;
  border-top: 1px solid color-mix(in srgb, var(--foreground) 12%, transparent);
  display: flex; flex-direction: column; gap: 1.5rem;
}
.site-footer .footer-brand { width: 100%; min-width: 0; }
.site-footer .brand {
  display: block; white-space: nowrap;
  font-family: var(--font-display); font-weight: 700;
  color: var(--foreground); margin: 0;
  /* no-JS-safe: visible by default; motion.js sets the hidden state in-DOM if arming */
}
.site-footer .footer-links { display: flex; gap: 1.5rem; flex-wrap: wrap; font-size: .9rem; }
.site-footer .footer-links a { color: var(--accent); transition: color .25s var(--ease-spring); }
.site-footer .footer-links a:hover { color: var(--primary-cta); }
.site-footer .foot-line { color: var(--accent); font-size: .85rem; }

/* ---- V4 hover stagger — gentle inner cascade on .card:hover
   (title 0s, meta .05s, cover .1s; 450ms; killed by the reduced-motion block).
   Transitions only — never layout, so face dots / BA slider are untouched. */
.card img { transition: transform 450ms var(--ease-spring); }
.card .caption,
.card .badge-row { transition: transform 450ms var(--ease-spring), opacity 450ms var(--ease-spring); }
.card:hover img { transform: scale(1.02); transition-delay: .1s; }
.card:hover .caption { transform: translateY(-2px); transition-delay: 0s; }
.card:hover .badge-row { transform: translateY(-2px); transition-delay: .05s; }

/* ---- .silk-glow — BorderGlow port (spec V11/V12).
   JS (motion.js) adds the class + drives --glow-start/--glow-active from ONE
   rAF-throttled body pointermove listener (proximity 64px, fine-pointer only,
   angle ease 2s [0.16,1,0.3,1]). The glow is a 80° conic beam (spread 40)
   clipped to a 1.5px border ring via the mask ring trick; host must be
   positioned (JS adds position:relative where missing via this rule). */
.silk-glow { position: relative; }
.silk-glow::after {
  content: ""; position: absolute; inset: 0;
  border-radius: inherit;
  border: var(--glow-border-width, 1.5px) solid transparent;
  background: conic-gradient(
    from calc((var(--glow-start, 0) - var(--glow-spread, 40)) * 1deg),
    transparent 0deg,
    var(--accent) calc(var(--glow-spread, 40) * 1deg),
    transparent calc(var(--glow-spread, 40) * 2deg)
  );
  opacity: var(--glow-active, 0);
  transition: opacity 300ms;
  pointer-events: none;
  mask:
    linear-gradient(#fff 0 0) border-box,
    linear-gradient(#fff 0 0) padding-box;
  mask-composite: exclude;
  -webkit-mask:
    linear-gradient(#fff 0 0) border-box,
    linear-gradient(#fff 0 0) padding-box;
  -webkit-mask-composite: xor;
}