/* ============================================================================
   SIGIL — design system
   Concept: a security document / assay hallmark. Engraved display type, security
   paper, oxidized-seal teal, embossed gold foil, sealing-wax red used once.
   Signature element: the rotating guilloché Seal that "presses" authorship.
   ========================================================================== */

/* ---- Tokens ------------------------------------------------------------- */
:root {
  --ink:        #101a26;
  --ink-2:      #16242f;
  --ink-3:      #1f3340;
  --ink-soft:   #2a3f4d;

  --vellum:     #ece5d6;
  --paper:      #f6f2ea;
  --vellum-2:   #e2d9c6;

  --foil:       #b89150;
  --foil-2:     #d8bd86;
  --foil-deep:  #8c6a35;

  --verdigris:  #2c6e63;
  --verdigris-2:#4e9488;
  --wax:        #b23a2e;

  --mist:       #8a99a3;
  --mist-2:     #b8c2c8;

  --line:       rgba(16, 26, 38, .14);
  --line-strong:rgba(16, 26, 38, .28);
  --line-foil:  rgba(184, 145, 80, .38);
  --line-dark:  rgba(236, 229, 214, .14);

  --font-display: "Cormorant Garamond", "Iowan Old Style", Georgia, serif;
  --font-body:    "Hanken Grotesk", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono:    "Space Mono", ui-monospace, "SFMono-Regular", "Cascadia Code", monospace;

  --maxw: 1240px;
  --gut: clamp(1.1rem, 4vw, 2.5rem);
  --radius: 3px;            /* documents barely round */
  --radius-lg: 6px;

  --shadow-emboss: 0 1px 0 rgba(255,255,255,.5), 0 -1px 0 rgba(0,0,0,.06);
  --shadow-card: 0 1px 2px rgba(16,26,38,.06), 0 18px 40px -28px rgba(16,26,38,.45);
  --shadow-float: 0 30px 60px -30px rgba(16,26,38,.55);

  --ease: cubic-bezier(.22, .61, .36, 1);
  --ease-emph: cubic-bezier(.16, 1, .3, 1);
}

/* ---- Reset -------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}
body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  font-size: 1.0625rem;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
ul, ol { list-style: none; padding: 0; }
:focus-visible { outline: 2px solid var(--verdigris-2); outline-offset: 3px; }

/* ---- Typography --------------------------------------------------------- */
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; line-height: 1.04; letter-spacing: -.01em; }
.display {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.9rem, 7vw, 6rem);
  line-height: .98;
  letter-spacing: -.02em;
}
.display em { font-style: italic; color: var(--foil); }
.h2 { font-size: clamp(2rem, 4.4vw, 3.4rem); }
.lead { font-size: clamp(1.12rem, 2vw, 1.4rem); line-height: 1.5; color: var(--ink-soft); }
.mono { font-family: var(--font-mono); }
.eyebrow {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .32em;
  text-transform: uppercase;
  color: var(--foil-deep);
  display: inline-flex; align-items: center; gap: .6em;
}
.eyebrow::before { content: ""; width: 1.8rem; height: 1px; background: var(--line-foil); }
.eyebrow.center::after { content: ""; width: 1.8rem; height: 1px; background: var(--line-foil); }
.eyebrow.center { justify-content: center; }
.measure { max-width: 62ch; }
.muted { color: var(--mist); }
.foil-text { color: var(--foil); }

/* ---- Layout ------------------------------------------------------------- */
.wrap { max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gut); }
.section { padding-block: clamp(3.5rem, 8vw, 7rem); }
.section-tight { padding-block: clamp(2.5rem, 5vw, 4rem); }
.grid { display: grid; gap: clamp(1rem, 2.5vw, 2rem); }
.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .cols-3, .cols-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .cols-2, .cols-3, .cols-4 { grid-template-columns: 1fr; } }
.center { text-align: center; }
.flow > * + * { margin-top: 1.1rem; }
.stack > * + * { margin-top: 2.4rem; }

/* Surfaces */
.theme-ink { background: var(--ink); color: var(--vellum); }
.theme-ink .lead, .theme-ink .muted { color: var(--mist-2); }
.theme-ink .eyebrow { color: var(--foil-2); }
.theme-ink .eyebrow::before, .theme-ink .eyebrow.center::after { background: var(--line-foil); }
.theme-ink a.link { color: var(--foil-2); }
.theme-vellum { background: var(--vellum); }

/* Security-paper guilloché backdrop */
.guilloche { position: relative; isolation: isolate; }
.guilloche::before {
  content: ""; position: absolute; inset: 0; z-index: -1; opacity: .5;
  background:
    repeating-radial-gradient(circle at 18% 28%, transparent 0 13px, rgba(184,145,80,.05) 13px 14px),
    repeating-radial-gradient(circle at 82% 74%, transparent 0 17px, rgba(78,148,136,.05) 17px 18px);
  mask-image: linear-gradient(180deg, transparent, #000 18%, #000 82%, transparent);
}

/* ---- Buttons ------------------------------------------------------------ */
.btn {
  --bg: var(--ink); --fg: var(--vellum);
  position: relative; display: inline-flex; align-items: center; gap: .6em;
  padding: .82em 1.4em; border: 1px solid transparent; border-radius: var(--radius);
  background: var(--bg); color: var(--fg);
  font-weight: 600; font-size: .94rem; letter-spacing: .01em; cursor: pointer;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), background .3s;
  will-change: transform;
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-float); }
.btn:active { transform: translateY(0); }
.btn-foil {
  --fg: #20160a;
  background: linear-gradient(135deg, var(--foil-2), var(--foil) 55%, var(--foil-deep));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.4), 0 10px 24px -14px rgba(140,106,53,.9);
}
.btn-verdigris { --bg: var(--verdigris); --fg: #f3fbf8; }
.btn-ghost {
  background: transparent; color: inherit; border-color: var(--line-strong);
}
.theme-ink .btn-ghost { border-color: var(--line-dark); color: var(--vellum); }
.btn-ghost:hover { border-color: var(--foil); }
.btn-sm { padding: .55em 1em; font-size: .82rem; }
.btn-block { width: 100%; justify-content: center; }
.btn[disabled] { opacity: .5; pointer-events: none; }

/* magnetic wrapper hook */
.magnetic { display: inline-block; }

/* ---- Chips / badges ----------------------------------------------------- */
.chip {
  display: inline-flex; align-items: center; gap: .45em;
  font-family: var(--font-mono); font-size: .68rem; letter-spacing: .08em; text-transform: uppercase;
  padding: .34em .7em; border: 1px solid var(--line-foil); border-radius: 100px;
  color: var(--foil-deep); background: rgba(184,145,80,.06);
}
.theme-ink .chip { color: var(--foil-2); background: rgba(184,145,80,.08); }
.chip-verd { color: var(--verdigris); border-color: rgba(44,110,99,.4); background: rgba(44,110,99,.07); }
.chip-wax  { color: var(--wax); border-color: rgba(178,58,46,.4); background: rgba(178,58,46,.07); }
.chip-dot::before { content:""; width:.5em; height:.5em; border-radius:50%; background: currentColor; box-shadow: 0 0 0 3px color-mix(in srgb, currentColor 16%, transparent); }

.kbd, .code {
  font-family: var(--font-mono); font-size: .82em; letter-spacing: .02em;
  background: rgba(16,26,38,.06); padding: .1em .45em; border-radius: 3px;
  border: 1px solid var(--line); word-break: break-all;
}
.theme-ink .code { background: rgba(236,229,214,.08); border-color: var(--line-dark); }

/* ---- The Seal (signature element) -------------------------------------- */
.seal { position: relative; width: min(440px, 78vw); aspect-ratio: 1; margin-inline: auto; }
.seal svg { width: 100%; height: 100%; overflow: visible; }
.seal .ring-rot { transform-origin: 50% 50%; animation: sealspin 60s linear infinite; }
.seal .ring-rot.rev { animation-duration: 90s; animation-direction: reverse; }
.seal-press { animation: sealpress 1.4s var(--ease-emph) both; }
.seal .core-mark { transform-origin: 50% 50%; }
@keyframes sealspin { to { transform: rotate(360deg); } }
@keyframes sealpress {
  0%   { transform: scale(1.25) translateY(-8px); opacity: 0; filter: blur(6px); }
  55%  { transform: scale(.97); opacity: 1; filter: blur(0); }
  72%  { transform: scale(1.02); }
  100% { transform: scale(1); }
}
.seal-caption {
  position: absolute; inset-inline: 0; bottom: -2.4rem; text-align: center;
  font-family: var(--font-mono); font-size: .7rem; letter-spacing: .26em; text-transform: uppercase; color: var(--foil-2);
}

/* ---- Hero --------------------------------------------------------------- */
.hero { position: relative; overflow: clip; padding-block: clamp(3rem, 8vw, 6rem) clamp(3rem, 9vw, 7rem); }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
@media (max-width: 920px) { .hero-grid { grid-template-columns: 1fr; } .seal { order: -1; } }
.hero-stamp { display: flex; flex-wrap: wrap; gap: 1.4rem 2.2rem; margin-top: 2.4rem; align-items: center; }
.hero-stat { display: flex; flex-direction: column; }
.hero-stat b { font-family: var(--font-display); font-size: 2.1rem; line-height: 1; color: var(--foil-2); }
.hero-stat span { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .2em; text-transform: uppercase; color: var(--mist); }

/* Marquee of platform names the marks are read by */
.marquee { overflow: hidden; border-block: 1px solid var(--line-dark); padding-block: 1rem; }
.marquee-track { display: flex; gap: 3rem; width: max-content; animation: slide 32s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span { font-family: var(--font-mono); font-size: .8rem; letter-spacing: .24em; text-transform: uppercase; color: var(--mist); display:inline-flex; align-items:center; gap:.7rem; }
.marquee-track span::after { content:"✦"; color: var(--foil); }
@keyframes slide { to { transform: translateX(-50%); } }

/* ---- Cards -------------------------------------------------------------- */
.card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card); overflow: hidden;
  transition: transform .5s var(--ease), box-shadow .5s var(--ease), border-color .4s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-float); border-color: var(--line-foil); }

/* Work (image) card with rights overlay */
.work-card { position: relative; display: block; }
.work-card .frame { position: relative; aspect-ratio: 4/5; overflow: hidden; background: var(--ink-2); }
.work-card .frame img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease); }
.work-card:hover .frame img { transform: scale(1.05); }
.work-card .rights-tag {
  position: absolute; left: .7rem; bottom: .7rem; z-index: 2;
  display: inline-flex; align-items: center; gap: .4em;
  font-family: var(--font-mono); font-size: .62rem; letter-spacing: .06em;
  padding: .3em .6em; border-radius: 3px; color: var(--vellum);
  background: rgba(16,26,38,.62); backdrop-filter: blur(6px); border: 1px solid rgba(236,229,214,.18);
}
.work-card .verified {
  position: absolute; right: .7rem; top: .7rem; z-index: 2;
  width: 2rem; height: 2rem; border-radius: 50%;
  background: rgba(16,26,38,.55); backdrop-filter: blur(6px);
  display: grid; place-items: center; color: var(--foil-2); border: 1px solid rgba(216,189,134,.4);
}
.work-card .body { padding: .9rem 1rem 1.1rem; }
.work-card .body h3 { font-size: 1.25rem; }
.work-card .meta { display: flex; justify-content: space-between; align-items: center; margin-top: .35rem; font-family: var(--font-mono); font-size: .68rem; color: var(--mist); letter-spacing: .04em; }

/* Post card */
.post-card { display: flex; flex-direction: column; height: 100%; }
.post-card .frame { aspect-ratio: 16/10; overflow: hidden; background: var(--ink-2); }
.post-card .frame img { width:100%; height:100%; object-fit: cover; transition: transform .8s var(--ease); }
.post-card:hover .frame img { transform: scale(1.04); }
.post-card .body { padding: 1.1rem 1.2rem 1.3rem; display: flex; flex-direction: column; gap: .5rem; flex: 1; }
.post-card h3 { font-size: 1.45rem; }
.post-card .excerpt { color: var(--ink-soft); font-size: .96rem; }
.post-card .byline { margin-top: auto; display: flex; align-items: center; gap: .6rem; font-size: .82rem; color: var(--mist); }
.byline img { width: 1.7rem; height: 1.7rem; border-radius: 50%; border: 1px solid var(--line-foil); }

/* Creator card */
.creator-card { padding: 1.4rem; text-align: center; }
.creator-card .seal-mini { width: 4.6rem; height: 4.6rem; border-radius: 50%; margin: 0 auto .8rem; border: 2px solid var(--line-foil); padding: 3px; }
.creator-card .seal-mini img { border-radius: 50%; width:100%; height:100%; object-fit: cover; }
.creator-card h3 { font-size: 1.5rem; }
.creator-card .handle { font-family: var(--font-mono); font-size: .76rem; color: var(--verdigris); }
.creator-card .nums { display: flex; justify-content: center; gap: 1.4rem; margin-top: .9rem; font-family: var(--font-mono); font-size: .72rem; color: var(--mist); }
.creator-card .nums b { display: block; font-family: var(--font-display); font-size: 1.4rem; color: var(--ink); }

/* ---- Process / numbered steps ------------------------------------------ */
.steps { counter-reset: step; }
.step { display: grid; grid-template-columns: auto 1fr; gap: 1.4rem; padding-block: 1.6rem; border-top: 1px solid var(--line-dark); }
.step .num { font-family: var(--font-mono); font-size: .8rem; color: var(--foil-2); padding-top: .4rem; }
.step h3 { font-size: 1.7rem; }
.step p { color: var(--mist-2); margin-top: .4rem; max-width: 56ch; }

/* ---- Forms -------------------------------------------------------------- */
.field { display: block; margin-bottom: 1.1rem; }
.field > label { display: block; font-family: var(--font-mono); font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; color: var(--foil-deep); margin-bottom: .5rem; }
.theme-ink .field > label { color: var(--foil-2); }
.input, .textarea, .select {
  width: 100%; padding: .8em .9em; background: var(--paper);
  border: 1px solid var(--line-strong); border-radius: var(--radius); color: var(--ink);
  transition: border-color .25s, box-shadow .25s;
}
.theme-ink .input, .theme-ink .textarea, .theme-ink .select { background: rgba(236,229,214,.04); border-color: var(--line-dark); color: var(--vellum); }
.input:focus, .textarea:focus, .select:focus { outline: none; border-color: var(--verdigris); box-shadow: 0 0 0 3px rgba(44,110,99,.16); }
.textarea { min-height: 8rem; resize: vertical; line-height: 1.6; }
.field .hint { font-size: .8rem; color: var(--mist); margin-top: .4rem; }
.field .err { color: var(--wax); font-size: .82rem; margin-top: .4rem; font-weight: 600; }
.field.has-error .input, .field.has-error .textarea { border-color: var(--wax); }
.input-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width:560px){ .input-row { grid-template-columns: 1fr; } }

/* ---- Flash / alerts ----------------------------------------------------- */
.flash { position: fixed; right: 1.2rem; top: 1.2rem; z-index: 90; display: flex; flex-direction: column; gap: .6rem; max-width: 360px; }
.alert {
  padding: .9rem 1.1rem; border-radius: var(--radius); background: var(--ink); color: var(--vellum);
  box-shadow: var(--shadow-float); border-left: 3px solid var(--foil);
  font-size: .9rem; animation: slidein .5s var(--ease-emph) both;
}
.alert.success { border-left-color: var(--verdigris-2); }
.alert.error { border-left-color: var(--wax); }
@keyframes slidein { from { transform: translateX(120%); opacity: 0; } }

/* ---- Header / nav ------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 60; transition: background .4s, border-color .4s, box-shadow .4s;
  border-bottom: 1px solid transparent;
}
.site-header.solid { background: color-mix(in srgb, var(--paper) 86%, transparent); backdrop-filter: blur(14px); border-color: var(--line); }
.theme-ink .site-header.solid, .site-header.on-ink.solid { background: color-mix(in srgb, var(--ink) 80%, transparent); border-color: var(--line-dark); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: inline-flex; align-items: center; gap: .65rem; font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; letter-spacing: .02em; }
.brand .glyph { width: 30px; height: 30px; }
.nav-links { display: flex; align-items: center; gap: 1.6rem; }
.nav-links a { font-size: .92rem; font-weight: 500; position: relative; color: var(--ink-soft); }
.theme-ink .nav-links a, .nav.on-ink .nav-links a { color: var(--mist-2); }
.nav-links a:hover { color: var(--ink); }
.theme-ink .nav-links a:hover { color: var(--vellum); }
.nav-links a.active { color: var(--foil-deep); }
.nav-cta { display: flex; align-items: center; gap: .8rem; }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: .6rem; margin-right: -.4rem; -webkit-tap-highlight-color: transparent; color: inherit; }
.nav-toggle span { display:block; width: 24px; height: 2px; background: currentColor; margin: 5px 0; transition: transform .3s, opacity .3s; border-radius: 2px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
/* On a dark (over-hero) header, the brand, links and hamburger must be light */
.nav.on-ink .brand,
.nav.on-ink .nav-toggle { color: var(--vellum); }
.nav.on-ink .desktop-only { color: var(--mist-2); }
.nav.on-ink .btn-ghost { color: var(--vellum); border-color: var(--line-dark); }
@media (max-width: 860px) {
  .nav-links, .nav-cta .desktop-only { display: none; }
  .nav-toggle { display: block; }
}
/* Off-screen + hidden until .open — no display toggle, so source order can't
   accidentally re-hide it. z-index above header(60)/flash(90)/progress(100). */
.mobile-menu { position: fixed; inset: 0; z-index: 9999; background: var(--ink); color: var(--vellum); padding: 1.3rem var(--gut) 2rem; overflow-y: auto; display: flex; flex-direction: column; transform: translateY(-100%); visibility: hidden; transition: transform .5s var(--ease-emph), visibility 0s linear .5s; }
.mobile-menu.open { transform: translateY(0); visibility: visible; transition: transform .5s var(--ease-emph); }

.mm-top { display: flex; align-items: center; justify-content: space-between; padding-bottom: 1.1rem; border-bottom: 1px solid var(--line-foil); position: relative; z-index: 1; }
.mm-top .brand .glyph { width: 26px; height: 26px; }
.mobile-menu .close { width: 2.7rem; height: 2.7rem; border-radius: 50%; border: 1px solid var(--line-dark); background: rgba(236,229,214,.05); color: var(--vellum); font-size: 1.05rem; cursor: pointer; display: grid; place-items: center; transition: border-color .25s, color .25s, transform .35s var(--ease); }
.mobile-menu .close:hover { border-color: var(--foil); color: var(--foil-2); transform: rotate(90deg); }

.mm-nav { position: relative; z-index: 1; flex: 1; display: flex; flex-direction: column; justify-content: center; min-height: 0; padding-block: 1.2rem; }
.mm-link { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.05rem .15rem; border-bottom: 1px solid var(--line-dark); }
.mm-link:first-child { border-top: 1px solid var(--line-dark); }
.mm-link-title { display: block; font-family: var(--font-display); font-size: clamp(1.9rem, 8vw, 2.5rem); line-height: 1; color: var(--vellum); transition: color .25s, transform .3s var(--ease); }
.mm-link-sub { display: block; font-family: var(--font-mono); font-size: .64rem; letter-spacing: .2em; text-transform: uppercase; color: var(--mist); margin-top: .45rem; }
.mm-arrow { font-family: var(--font-mono); font-size: 1.15rem; color: var(--foil); opacity: .45; transition: transform .3s var(--ease), opacity .25s; }
.mm-link.active .mm-link-title { color: var(--foil); }
.mm-link.active .mm-arrow, .mm-link:hover .mm-arrow, .mm-link:active .mm-arrow { opacity: 1; transform: translateX(5px); }
.mm-link:hover .mm-link-title, .mm-link:active .mm-link-title { color: var(--foil-2); transform: translateX(3px); }

.mm-foot { position: relative; z-index: 1; padding-top: 1.2rem; border-top: 1px solid var(--line-foil); display: flex; flex-direction: column; gap: .6rem; }
.mm-foot .btn { width: 100%; }
.mm-user { display: flex; align-items: center; gap: .75rem; padding: .1rem .15rem .55rem; }
.mm-user img { width: 2.5rem; height: 2.5rem; border-radius: 50%; border: 1px solid var(--line-foil); }
.mm-user strong { display: block; color: var(--vellum); font-weight: 600; }
.mm-user em { font-family: var(--font-mono); font-size: .72rem; font-style: normal; color: var(--mist); }
.mm-status { display: flex; justify-content: center; margin-top: .5rem; }

@media (prefers-reduced-motion: no-preference) {
  .mm-link, .mm-foot > * { opacity: 0; transform: translateY(18px); }
  .mobile-menu.open .mm-link, .mobile-menu.open .mm-foot > * { opacity: 1; transform: none; transition: opacity .5s var(--ease), transform .55s var(--ease); }
  .mobile-menu.open .mm-link:nth-child(1) { transition-delay: .10s; }
  .mobile-menu.open .mm-link:nth-child(2) { transition-delay: .16s; }
  .mobile-menu.open .mm-link:nth-child(3) { transition-delay: .22s; }
  .mobile-menu.open .mm-link:nth-child(4) { transition-delay: .28s; }
  .mobile-menu.open .mm-foot > * { transition-delay: .34s; }
}

/* ---- Footer ------------------------------------------------------------- */
.site-footer { background: var(--ink); color: var(--mist-2); padding-block: clamp(3rem, 6vw, 5rem) 2rem; }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 2rem; }
@media (max-width: 760px){ .footer-grid { grid-template-columns: 1fr 1fr; } }
.site-footer h4 { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .2em; text-transform: uppercase; color: var(--foil-2); margin-bottom: 1rem; font-weight: 400; }
.site-footer a { display: block; padding: .25rem 0; color: var(--mist-2); font-size: .92rem; }
.site-footer a:hover { color: var(--vellum); }
.footer-base { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-top: 3rem; padding-top: 1.4rem; border-top: 1px solid var(--line-dark); font-size: .8rem; color: var(--mist); font-family: var(--font-mono); }

/* ---- Reveal animation --------------------------------------------------- */
[data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
[data-reveal].in { opacity: 1; transform: none; }
[data-reveal][data-reveal="left"] { transform: translateX(-30px); }
[data-reveal][data-reveal="zoom"] { transform: scale(.94); }
[data-reveal].in[data-reveal="left"], [data-reveal].in[data-reveal="zoom"] { transform: none; }
.reveal-delay-1 { transition-delay: .08s; }
.reveal-delay-2 { transition-delay: .16s; }
.reveal-delay-3 { transition-delay: .24s; }
.reveal-delay-4 { transition-delay: .32s; }

/* scroll progress */
.scroll-progress { position: fixed; top: 0; left: 0; height: 2px; width: 0; background: linear-gradient(90deg, var(--verdigris), var(--foil)); z-index: 100; transition: width .1s linear; }

/* ---- Registry / proof document ----------------------------------------- */
.proof-doc { border: 1px solid var(--line-foil); border-radius: var(--radius-lg); background: var(--paper); position: relative; }
.proof-doc::after { content:""; position:absolute; inset: 7px; border: 1px solid var(--line); border-radius: 3px; pointer-events: none; }
.proof-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; padding: 1.4rem 1.6rem; border-bottom: 1px dashed var(--line-strong); }
.proof-body { padding: 1.6rem; }
.proof-row { display: grid; grid-template-columns: 200px 1fr; gap: 1rem; padding: .85rem 0; border-bottom: 1px solid var(--line); align-items: baseline; }
@media (max-width:600px){ .proof-row { grid-template-columns: 1fr; gap: .2rem; } }
.proof-row dt { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; color: var(--foil-deep); }
.proof-row dd { font-size: .98rem; word-break: break-word; }
.proof-row dd.mono { font-family: var(--font-mono); font-size: .84rem; }

/* keyword cloud */
.kw-cloud { display: flex; flex-wrap: wrap; gap: .5rem; }
.kw-cloud .kw { font-family: var(--font-mono); font-size: .74rem; padding: .35em .7em; border: 1px solid var(--line); border-radius: 3px; background: rgba(44,110,99,.05); color: var(--ink-soft); }

/* certificate */
.certificate { background: var(--paper); color: var(--ink); border: 2px solid var(--foil); padding: clamp(1.5rem, 5vw, 3.5rem); position: relative; box-shadow: var(--shadow-card); }
.certificate::before { content:""; position:absolute; inset: 10px; border: 1px solid var(--line-foil); pointer-events:none; }
.cert-seal { width: 120px; height: 120px; margin: 0 auto; }

/* Red certification stamp (con dấu mộc đỏ) */
.cert-stamp { width: 150px; height: 150px; transform: rotate(var(--rot, -13deg)); mix-blend-mode: multiply; opacity: .9; pointer-events: none; filter: drop-shadow(0 1px 0 rgba(181,36,27,.15)); }
.cert-stamp svg { width: 100%; height: 100%; }
.stamp-float { position: absolute; z-index: 3; }
@media (prefers-reduced-motion: no-preference) {
  .cert-stamp.stamp-in { animation: stampin .6s cubic-bezier(.2,1.3,.4,1) both; }
}
@keyframes stampin { 0% { transform: rotate(var(--rot,-13deg)) scale(2.4); opacity: 0; } 60% { opacity: .95; } 100% { transform: rotate(var(--rot,-13deg)) scale(1); opacity: .9; } }

/* ---- Dashboard ---------------------------------------------------------- */
.dash { display: grid; grid-template-columns: 252px 1fr; min-height: 100vh; }
@media (max-width: 900px) { .dash { grid-template-columns: 1fr; } }
.dash-side { background: var(--ink); color: var(--mist-2); padding: 1.6rem 1.2rem; position: sticky; top: 0; align-self: start; height: 100vh; overflow-y: auto; }
@media (max-width:900px){ .dash-side { position: static; height: auto; } }
.dash-side .brand { color: var(--vellum); margin-bottom: 2rem; }
.dash-nav a { display: flex; align-items: center; gap: .7rem; padding: .65rem .8rem; border-radius: var(--radius); font-size: .92rem; color: var(--mist-2); transition: background .25s, color .25s; }
.dash-nav a:hover { background: rgba(236,229,214,.06); color: var(--vellum); }
.dash-nav a.active { background: rgba(184,145,80,.14); color: var(--foil-2); }
.dash-nav .group { font-family: var(--font-mono); font-size: .64rem; letter-spacing: .2em; text-transform: uppercase; color: var(--mist); margin: 1.4rem .8rem .5rem; }
.dash-main { padding: clamp(1.4rem, 3vw, 2.6rem); background: var(--vellum); }
.dash-head { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; margin-bottom: 2rem; }
.dash-head h1 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }

.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-bottom: 2rem; }
@media (max-width:760px){ .stat-grid { grid-template-columns: repeat(2,1fr); } }
.stat { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 1.2rem 1.3rem; }
.stat .label { font-family: var(--font-mono); font-size: .66rem; letter-spacing: .16em; text-transform: uppercase; color: var(--mist); }
.stat .value { font-family: var(--font-display); font-size: 2.5rem; line-height: 1; margin-top: .5rem; }
.stat .trend { font-size: .78rem; color: var(--verdigris); margin-top: .4rem; }

/* table */
.table-wrap { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow-x: auto; -webkit-overflow-scrolling: touch; }
table.data { min-width: 540px; }
table.data { width: 100%; border-collapse: collapse; }
table.data th { text-align: left; font-family: var(--font-mono); font-size: .66rem; letter-spacing: .14em; text-transform: uppercase; color: var(--mist); padding: .9rem 1rem; border-bottom: 1px solid var(--line); }
table.data td { padding: .85rem 1rem; border-bottom: 1px solid var(--line); font-size: .92rem; vertical-align: middle; }
table.data tr:last-child td { border-bottom: 0; }
table.data tr:hover td { background: rgba(44,110,99,.03); }
.status-pill { font-family: var(--font-mono); font-size: .64rem; letter-spacing: .08em; text-transform: uppercase; padding: .26em .6em; border-radius: 100px; }
.status-published { background: rgba(44,110,99,.12); color: var(--verdigris); }
.status-draft { background: rgba(138,153,163,.16); color: var(--ink-soft); }
.status-archived { background: rgba(178,58,46,.1); color: var(--wax); }
.status-pending { background: rgba(184,145,80,.16); color: var(--foil-deep); }
.status-rejected { background: rgba(178,58,46,.14); color: var(--wax); }

/* profile header */
.profile-hero { position: relative; }
.profile-cover { aspect-ratio: 5/1.4; background: var(--ink-2); overflow: hidden; }
.profile-cover img { width:100%; height:100%; object-fit: cover; opacity: .9; }
.profile-id { display: flex; gap: 1.4rem; align-items: flex-end; margin-top: -3.5rem; position: relative; z-index: 2; }
.profile-id .seal-avatar { width: 7rem; height: 7rem; border-radius: 50%; border: 3px solid var(--foil); padding: 4px; background: var(--paper); flex: none; }
.profile-id .seal-avatar img { width:100%; height:100%; border-radius:50%; object-fit: cover; }
.profile-tabs { display: flex; gap: .4rem; border-bottom: 1px solid var(--line); margin-top: 1.6rem; }
.profile-tabs a { padding: .8rem 1.1rem; font-size: .9rem; font-weight: 600; color: var(--mist); border-bottom: 2px solid transparent; }
.profile-tabs a.active { color: var(--ink); border-bottom-color: var(--foil); }

/* article body */
.article { max-width: 720px; margin-inline: auto; }
.article-body { font-size: 1.16rem; line-height: 1.78; color: #20303b; }
.article-body > * + * { margin-top: 1.4rem; }
.article-body h2 { font-size: 2rem; margin-top: 2.6rem; }
.article-body h3 { font-size: 1.5rem; margin-top: 2rem; }
.article-body a { color: var(--verdigris); text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--line-foil); }
.article-body blockquote { border-left: 3px solid var(--foil); padding-left: 1.2rem; font-family: var(--font-display); font-size: 1.5rem; font-style: italic; color: var(--ink-soft); }
.article-body img { border-radius: var(--radius-lg); margin-block: 1.8rem; }
.article-body pre.md-code { background: var(--ink); color: var(--vellum); padding: 1.1rem 1.3rem; border-radius: var(--radius); overflow-x: auto; font-size: .9rem; }
.article-body ul, .article-body ol { padding-left: 1.3rem; }
.article-body ul li { list-style: disc; margin-top: .4rem; }
.article-body ol li { list-style: decimal; margin-top: .4rem; }
.article-body code { font-family: var(--font-mono); font-size: .88em; background: rgba(16,26,38,.06); padding: .1em .4em; border-radius: 3px; }

/* utility */
.divider { height: 1px; background: var(--line); border: 0; margin-block: 2rem; }
.theme-ink .divider { background: var(--line-dark); }
.tilt { transition: transform .4s var(--ease); transform-style: preserve-3d; }
.hidden { display: none !important; }
.spread { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.gap-sm { gap: .6rem; } .gap { gap: 1rem; }
.row { display: flex; align-items: center; gap: .8rem; flex-wrap: wrap; }
.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mt-3{margin-top:1.6rem}.mt-4{margin-top:2.4rem}
.mb-0{margin-bottom:0}.text-sm{font-size:.86rem}.w-full{width:100%}
.pagination { display:flex; gap:.5rem; justify-content:center; margin-top:2.5rem; }
.pagination a, .pagination span { padding:.5rem .9rem; border:1px solid var(--line); border-radius:var(--radius); font-family:var(--font-mono); font-size:.82rem; }
.pagination .current { background: var(--ink); color: var(--vellum); border-color: var(--ink); }

.empty { text-align:center; padding: 4rem 1rem; color: var(--mist); }
.empty .seal-mini { width: 80px; margin: 0 auto 1.4rem; opacity: .6; }

/* ---- Work gallery + lightbox ------------------------------------------- */
.work-gallery { position: relative; }
.work-gallery .stamp-float { top: -.6rem; right: -.6rem; width: 120px; }
.work-gallery .cert-stamp { width: 120px; height: 120px; }
@media (max-width: 600px) { .work-gallery .stamp-float { width: 92px; } .work-gallery .cert-stamp { width: 92px; height: 92px; } }
.work-gallery-main img { transition: opacity .25s var(--ease); }
.work-thumb { transition: border-color .2s, transform .2s; }
.work-thumb:hover { border-color: var(--foil); transform: translateY(-2px); }
.work-thumb.active { border-color: var(--foil) !important; box-shadow: 0 0 0 2px rgba(184,145,80,.35); }
.lightbox { position: fixed; inset: 0; z-index: 120; background: rgba(8,13,18,.95); display: none; place-items: center; padding: 2rem; cursor: zoom-out; backdrop-filter: blur(4px); }
.lightbox.open { display: grid; animation: lbfade .3s var(--ease); }
@keyframes lbfade { from { opacity: 0; } }
.lightbox img { max-width: 94vw; max-height: 88vh; object-fit: contain; border-radius: 4px; box-shadow: 0 30px 80px -20px rgba(0,0,0,.7); }
.lightbox .lb-close { position: absolute; top: 1.2rem; right: 1.6rem; font-size: 1.8rem; color: var(--vellum); background: none; border: 0; cursor: pointer; line-height: 1; }
.lightbox .lb-nav { position: absolute; top: 50%; transform: translateY(-50%); background: rgba(236,229,214,.1); color: var(--vellum); border: 1px solid rgba(236,229,214,.2); width: 3rem; height: 3rem; border-radius: 50%; cursor: pointer; font-size: 1.3rem; display: grid; place-items: center; }
.lightbox .lb-nav:hover { background: var(--foil); color: var(--ink); }
.lightbox .lb-prev { left: 1.4rem; } .lightbox .lb-next { right: 1.4rem; }
.lightbox .lb-count { position: absolute; bottom: 1.4rem; left: 50%; transform: translateX(-50%); font-family: var(--font-mono); font-size: .8rem; color: var(--mist-2); letter-spacing: .1em; }

/* ============================================================================
   Responsive — phone & tablet fixes
   ========================================================================== */

/* Any 2-column layout marked .mobile-stack collapses to a single column.
   The !important overrides the inline grid-template-columns on small screens. */
@media (max-width: 820px) {
  .mobile-stack { grid-template-columns: 1fr !important; }
}

/* Tablet */
@media (max-width: 760px) {
  body { font-size: 1rem; }
  .display { font-size: clamp(2.4rem, 9vw, 3.4rem); }
  .section { padding-block: clamp(2.6rem, 7vw, 4rem); }
  .article-body { font-size: 1.08rem; }
}

/* Phone */
@media (max-width: 560px) {
  :root { --gut: 1.1rem; }
  .nav { height: 62px; }
  .brand { font-size: 1.3rem; }
  /* Keep the header to brand + hamburger so the menu button always fits;
     the CTA/profile links live inside the mobile menu. */
  .nav-cta .magnetic { display: none; }

  /* Work proof page: image + proof stack, comfortable spacing */
  .work-gallery .stamp-float { top: -.4rem; right: -.4rem; width: 84px; }
  .work-gallery .cert-stamp { width: 84px; height: 84px; }
  .work-thumbs { grid-template-columns: repeat(4, 1fr) !important; }
  .proof-row { grid-template-columns: 1fr !important; gap: .15rem; padding: .7rem 0; }
  .proof-head { flex-wrap: wrap; }
  .proof-body { padding: 1.1rem; }
  dd.mono, .proof-row dd.mono { font-size: .72rem; }

  /* Certificate */
  .certificate { padding: 1.4rem 1.1rem; }
  .certificate .row { gap: 1rem; }
  .certificate .row img { width: 100% !important; max-width: 240px; margin-inline: auto; }
  .certificate dl { min-width: 0 !important; width: 100%; }
  .cert-seal, .certificate .seal { width: min(220px, 64vw); }
  .stamp-float { right: .6rem !important; bottom: .6rem !important; }
  .cert-stamp { width: 104px; height: 104px; }

  /* Tighten cards & dash */
  .card { border-radius: var(--radius); }
  .dash-main { padding: 1.1rem; }
  .dash-head h1 { font-size: 1.6rem; }
  .stat .value { font-size: 2rem; }

  /* Lightbox controls easier to reach */
  .lightbox { padding: 1rem; }
  .lightbox .lb-nav { width: 2.6rem; height: 2.6rem; }
  .lightbox .lb-prev { left: .6rem; } .lightbox .lb-next { right: .6rem; }
  .lightbox .lb-close { top: .8rem; right: 1rem; }

  /* Long mono strings (hashes, URLs) never overflow */
  .mono, .code, .kbd { overflow-wrap: anywhere; word-break: break-word; }

  /* Profile header spacing */
  .profile-id { flex-wrap: wrap; gap: 1rem; }
  .profile-id .seal-avatar { width: 5.5rem; height: 5.5rem; }
  .profile-tabs { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .profile-tabs a { white-space: nowrap; }
}

/* Dashboard sidebar becomes a horizontal scroller on small screens */
@media (max-width: 900px) {
  .dash-side { display: flex; flex-direction: column; }
  .dash-nav { display: flex; flex-wrap: wrap; gap: .25rem; }
  .dash-nav .group { width: 100%; margin: .8rem .4rem .2rem; }
  .dash-nav a { flex: 0 0 auto; }
}
/* Spinner button animation */
.btn-spinner {
    display: inline-block;
    width: 1em;
    height: 1em;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
    margin-right: 0.5em;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}