/* =============================================================================
   Abnabat Studio — shared stylesheet (css/style.css)
   Language: tr · Direction: ltr (logical properties + small RTL block included)

   SHARED MARKUP CONTRACT (all pages use these exact names)
   ---------------------------------------------------------------------------
   THEME   <html lang="tr" dir="ltr" data-theme="morning|evening|midnight">
           JS sets data-theme from the visitor's local hour. No attribute = morning.
           CSS only reacts to it. Optional: JS may add class "js" on <html>.
   PARALLAX  JS writes --parallax-y (e.g. "42px") on [data-parallax-root] (.hero).
           Any element with .parallax (and .shape--near|mid|far) follows it.

   SKELETON
     <a class="skip-link" href="#main">…</a>
     <header class="site-header" data-header>            (state: .is-scrolled)
       <div class="container site-header__inner">
         <a class="brand" href="index.php">Abnabat Studio</a>
         <nav class="site-nav" aria-label="…" [data-collapsible]>   (state: .is-open)
           <button class="nav-toggle" type="button" aria-expanded="false"
                   aria-controls="site-menu" data-nav-toggle>
             <span class="nav-toggle__bar"></span><span class="nav-toggle__bar"></span>
             <span class="sr-only">Menü</span></button>      (only shown with [data-collapsible])
           <ul class="site-nav__list" id="site-menu" data-nav-menu>
             <li><a class="site-nav__link" href="…" aria-current="page">…</a></li>
             <li><a class="btn btn--sm" data-cta="primary" href="game.php">…</a></li>
     <main id="main"> one or more:
       <section class="band band--light|band--dark [band--flat] [id]">
         <div class="band__bg" aria-hidden="true"><span class="shape shape--blob|ring|squircle|dot
              shape--accent|ink shape--lg|md|sm shape--tl|tr|bl|br|c shape--near|mid|far"></span></div>
         <div class="container">…</div>
     <footer class="band band--dark|band--light site-footer">   (directly after </main>)
       <div class="container site-footer__inner">
         <a class="wordmark" href="index.php">Abnabat Studio</a>
         <nav class="footer-nav" aria-label="…"><ul class="footer-nav__list">
           <li><a class="footer-nav__link" href="…">…</a></li></ul></nav>
         <p class="site-footer__legal">…</p>
   Bands: first band in <main> is flat; every later band gets a slanted top edge
   (auto, no extra class). Alternate band--light / band--dark.

   PRIMARY CTA (split: label + icon chip)
     <a class="btn [btn--lg|btn--sm]" data-cta="primary" href="game.php">
       <span class="btn__label">…</span>
       <span class="btn__chip" aria-hidden="true"><svg class="btn__icon" viewBox="0 0 24 24"
         width="20" height="20" focusable="false"><path d="M5 12h14M13 6l6 6-6 6" fill="none"
         stroke="currentColor" stroke-width="2.4" stroke-linecap="round" stroke-linejoin="round"/>
       </svg></span></a>      (empty .btn__chip falls back to a text arrow)
     Secondary: <a|button class="btn btn--ghost">text</a>  (never data-cta="primary")

   HERO (index)  section.band.band--light.hero[data-parallax-root]
     .band__bg · .container.hero__inner > .hero__copy (.eyebrow, h1.hero__title with
     span.hl, p.hero__lead, .hero__actions > .btn + .hero__note) + .hero__art.parallax
     > .puzzle-art > 9× span.puzzle-art__tile[--on|--ink|--ring|--blob]
     then .marquee[aria-label] > .marquee__track > 2× .marquee__group (2nd has
     aria-hidden="true") > .marquee__item.   State: .marquee.is-paused
   HERO (game)   section.band.band--light.hero.hero--game[data-parallax-root]
     .greeting (mood icon follows theme), h1.hero__title, p.hero__lead,
     .countdown > .countdown__label + time.countdown__value[data-countdown]
   ABOUT  section.band.band--dark.about#hakkinda > .container > .about__head
     (.wordmark.wordmark--xl, blockquote.philosophy > p) + ul.project-grid >
     li.project-card > .project-card__cover + .project-card__body
     (.tag.tag--placeholder, h3.project-card__title, p.project-card__text)
   CTA    section.band.band--light.cta > .container > .cta__panel
     (h2.cta__title, .btn, p.cta__foot)
   PUZZLE section.band.band--dark.puzzle-section > .container.puzzle-layout >
     .puzzle[data-state="idle|playing|solved"] (state class: .is-solved)
       .puzzle__header (h2.puzzle__title, .puzzle__meta > .puzzle__moves/.puzzle__date)
       p.puzzle__rule
       .puzzle__board[data-cols="3..7"] > button.puzzle__cell
          cell states: .is-on | aria-pressed="true" | .is-selected | .is-hint |
                       .is-locked | .is-wrong | .is-correct | :disabled
       .puzzle__choices > button.puzzle__choice (.is-selected/.is-correct/.is-wrong)
       p.puzzle__status[role="status"][aria-live="polite"] (.is-success | .is-error)
       .puzzle__actions > .btn.btn--ghost
       .puzzle__result[hidden] > p.puzzle__note[hidden]   (JS removes [hidden])
     + optional aside.puzzle-aside > .eyebrow + ol.rules > li
   COMPONENTS  .card, .chip-row > .chip (.is-active | aria-pressed), .tag,
     forms: .field > .field__label + .input|.textarea|.select + .field__hint|.field__error
     (states: aria-invalid="true", .is-invalid, .is-valid, :disabled),
     documents: .prose, utilities: .sr-only, .mono, .stack, .link, [hidden]
   ========================================================================== */

/* ---------- 1. Tokens ---------- */
:root {
  --font-body: var(--mrc-font-en, system-ui), system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: var(--mrc-font-en, system-ui), system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;

  --fs-0: clamp(1rem, 0.96rem + 0.2vw, 1.125rem);
  --fs-1: clamp(1.125rem, 1.04rem + 0.45vw, 1.375rem);
  --fs-2: clamp(1.25rem, 1.1rem + 0.7vw, 1.625rem);
  --fs-3: clamp(1.75rem, 1.1rem + 2.6vw, 3.25rem);
  --fs-4: clamp(2.5rem, 1.3rem + 6vw, 6.25rem);
  --fs-mono: 0.8125rem;

  --r-sm: 0.875rem;
  --r-md: 1.25rem;
  --r-lg: 2rem;
  --r-pill: 999px;
  --r-squircle: 34%;
  --r-blob: 62% 38% 55% 45% / 48% 58% 42% 52%;

  --gutter: clamp(1rem, 4vw, 2rem);
  --container: 72rem;
  --space-section: clamp(3rem, 8vw, 6.5rem);
  --slant: clamp(1.75rem, 5vw, 5.25rem);

  --ease: cubic-bezier(0.22, 0.8, 0.3, 1);
  --chip-ink-fixed: #1b1b3a;
}

/* Morning — warm cream, coral accent */
:root,
html[data-theme="morning"] {
  color-scheme: light;
  --bg: #fff4e0;
  --bg-2: #ffe8c4;
  --card-l: #fffbf3;
  --ink: #1b1b3a;
  --ink-soft: #4b4b68;
  --dk: #1b1b3a;
  --dk-2: #2a2a52;
  --on-dk: #fff4e0;
  --on-dk-soft: #cfcadb;
  --accent: #ff8a65;
  --accent-text-l: #b03c16;
  --accent-text-d: #ff8a65;
  --accent-soft: rgba(255, 138, 101, 0.3);
  --line-l: rgba(27, 27, 58, 0.16);
  --line-d: rgba(255, 244, 224, 0.2);
  --ghost-l: rgba(27, 27, 58, 0.06);
  --ghost-d: rgba(255, 244, 224, 0.08);
  --hero-glow: radial-gradient(48rem 32rem at 88% 0%, rgba(255, 138, 101, 0.3), transparent 65%);
  --header-bg: rgba(255, 244, 224, 0.88);
}

/* Evening / afternoon — soft coral, plum-indigo dark bands */
html[data-theme="evening"] {
  color-scheme: light;
  --bg: #ffc9b2;
  --bg-2: #ffb59a;
  --card-l: #ffe3d8;
  --ink: #1b1b3a;
  --ink-soft: #3f3a5c;
  --dk: #2b1e45;
  --dk-2: #3c2c5c;
  --on-dk: #ffede4;
  --on-dk-soft: #e2cfd8;
  --accent: #ff8a65;
  --accent-text-l: #9f2d10;
  --accent-text-d: #ff9c7c;
  --accent-soft: rgba(255, 138, 101, 0.5);
  --line-l: rgba(27, 27, 58, 0.18);
  --line-d: rgba(255, 237, 228, 0.22);
  --ghost-l: rgba(27, 27, 58, 0.07);
  --ghost-d: rgba(255, 237, 228, 0.09);
  --hero-glow: radial-gradient(52rem 36rem at 85% 100%, rgba(255, 138, 101, 0.55), transparent 65%),
    radial-gradient(40rem 28rem at 0% 0%, rgba(255, 244, 224, 0.5), transparent 65%);
  --header-bg: rgba(255, 201, 178, 0.88);
}

/* Midnight — deep indigo, candy-pink accent */
html[data-theme="midnight"] {
  color-scheme: dark;
  --bg: #1b1b3a;
  --bg-2: #25254c;
  --card-l: #25254c;
  --ink: #fff4e0;
  --ink-soft: #c9c5dc;
  --dk: #11112b;
  --dk-2: #1b1b3a;
  --on-dk: #fff4e0;
  --on-dk-soft: #b9b5cf;
  --accent: #ff5c8a;
  --accent-text-l: #ff7fa3;
  --accent-text-d: #ff7fa3;
  --accent-soft: rgba(255, 92, 138, 0.28);
  --line-l: rgba(255, 244, 224, 0.18);
  --line-d: rgba(255, 244, 224, 0.16);
  --ghost-l: rgba(255, 244, 224, 0.07);
  --ghost-d: rgba(255, 244, 224, 0.07);
  --hero-glow: radial-gradient(44rem 30rem at 85% 100%, rgba(255, 92, 138, 0.24), transparent 65%);
  --header-bg: rgba(27, 27, 58, 0.88);
}

/* Band-scoped semantic tokens (also applied to body for header/outside content) */
body,
.band {
  --b-bg: var(--bg);
  --b-alt: var(--bg-2);
  --b-ink: var(--ink);
  --b-soft: var(--ink-soft);
  --b-card: var(--card-l);
  --b-line: var(--line-l);
  --b-accent: var(--accent);
  --b-accent-text: var(--accent-text-l);
  --b-ghost: var(--ghost-l);
}
.band--dark {
  --b-bg: var(--dk);
  --b-alt: var(--dk-2);
  --b-ink: var(--on-dk);
  --b-soft: var(--on-dk-soft);
  --b-card: var(--dk-2);
  --b-line: var(--line-d);
  --b-accent-text: var(--accent-text-d);
  --b-ghost: var(--ghost-d);
}

/* ---------- 2. Base ---------- */
*,
*::before,
*::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 5rem;
}
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font: 400 var(--fs-0) / 1.65 var(--font-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  overflow-x: clip;
}
h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.025em;
  text-wrap: balance;
  overflow-wrap: break-word;
}
p { margin: 0; text-wrap: pretty; overflow-wrap: break-word; }
ul, ol { margin: 0; padding: 0; }
a { color: inherit; text-underline-offset: 0.2em; }
svg { display: block; }
button { font: inherit; color: inherit; }
[hidden] { display: none !important; }
::selection { background: var(--accent); color: var(--chip-ink-fixed); }

:focus-visible {
  outline: 3px solid var(--b-ink, currentColor);
  outline-offset: 3px;
}

.container {
  width: min(100% - 2 * var(--gutter), var(--container));
  margin-inline: auto;
}
.sr-only {
  position: absolute !important;
  width: 1px; height: 1px; margin: -1px; padding: 0; border: 0;
  overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}
.skip-link {
  position: fixed; inset-block-start: 0.5rem; inset-inline-start: 0.5rem; z-index: 200;
  padding: 0.75rem 1rem; border-radius: var(--r-sm);
  background: var(--ink); color: var(--bg); font-family: var(--font-mono); font-size: var(--fs-mono);
  transform: translateY(-200%);
}
.skip-link:focus { transform: none; }
.stack > * + * { margin-block-start: var(--stack, 1rem); }
.mono { font-family: var(--font-mono); font-size: var(--fs-mono); letter-spacing: 0.02em; }
.link { color: var(--b-accent-text); font-weight: 600; }
.link:hover { text-decoration-thickness: 3px; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--font-mono); font-size: var(--fs-mono); letter-spacing: 0.04em;
  color: var(--b-accent-text);
}
.eyebrow::before {
  content: ""; flex: none; width: 0.8rem; height: 0.8rem;
  background: var(--b-accent); border-radius: var(--r-blob);
}
.tag {
  display: inline-flex; align-items: center; padding: 0.2rem 0.7rem;
  border: 1px solid var(--b-line); border-radius: var(--r-pill);
  font-family: var(--font-mono); font-size: 0.75rem; color: var(--b-soft); line-height: 1.5;
}
.tag--placeholder { border-style: dashed; border-color: var(--b-accent-text); color: var(--b-accent-text); }

/* ---------- 3. Buttons (split CTA: label + icon chip) ---------- */
.btn {
  --btn-bg: var(--b-ink);
  --btn-ink: var(--b-bg);
  --chip-bg: var(--b-accent);
  --chip-ink: var(--chip-ink-fixed);
  position: relative;
  display: inline-flex; align-items: stretch; gap: 0.25rem;
  min-height: 2.875rem; max-width: 100%;
  padding: 0; border: 0; background: none;
  color: inherit; text-decoration: none; cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.btn__label {
  display: inline-flex; align-items: center; min-width: 0;
  padding: 0.5rem 1.1rem;
  background: var(--btn-bg); color: var(--btn-ink);
  font-family: var(--font-body); font-size: 0.9375rem; font-weight: 700; line-height: 1.25;
  border-start-start-radius: 1.1rem; border-end-start-radius: 1.1rem;
  border-start-end-radius: 0.4rem; border-end-end-radius: 0.4rem;
}
.btn__chip {
  display: inline-grid; place-items: center; flex: none; width: 2.875rem;
  background: var(--chip-bg); color: var(--chip-ink);
  border-start-start-radius: 0.4rem; border-end-start-radius: 0.4rem;
  border-start-end-radius: 1.1rem; border-end-end-radius: 1.1rem;
}
.btn__chip:empty::before { content: "\2192"; font-weight: 800; font-size: 1.2rem; line-height: 1; }
.btn__icon { width: 1.25rem; height: 1.25rem; }
/* instant feedback only — no transitions, no looping motion */
.btn:hover,
.btn:focus-visible {
  --btn-bg: var(--b-accent);
  --btn-ink: var(--chip-ink-fixed);
  --chip-bg: var(--b-ink);
  --chip-ink: var(--b-bg);
}
.btn:active { transform: translateY(2px); }
.btn:active .btn__label,
.btn:active .btn__chip { filter: brightness(0.92); }
.btn--sm { min-height: 2.75rem; }
.btn--sm .btn__label { padding-inline: 0.9rem; font-size: 0.875rem; }
.btn--sm .btn__chip { width: 2.75rem; }
.btn--lg { min-height: 3.25rem; }
.btn--lg .btn__label { padding-inline: 1.35rem; font-size: 1rem; }
.btn--lg .btn__chip { width: 3.25rem; }
.btn[aria-disabled="true"], .btn:disabled { opacity: 0.5; pointer-events: none; }

.btn--ghost {
  align-items: center; padding: 0.5rem 1.1rem;
  border: 2px solid var(--b-ink); border-radius: 1.1rem;
  color: var(--b-ink); font-weight: 700; font-size: 0.9375rem;
}
.btn--ghost .btn__label { padding: 0; background: none; color: inherit; border-radius: 0; }
.btn--ghost:hover, .btn--ghost:focus-visible { background: var(--b-ink); color: var(--b-bg); }

/* ---------- 4. Header / navigation ---------- */
.site-header {
  position: sticky; inset-block-start: 0; z-index: 100;
  background: var(--header-bg); color: var(--ink);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  border-block-end: 1px solid var(--line-l);
}
.site-header.is-scrolled { box-shadow: 0 0.6rem 1.5rem -1.1rem rgba(27, 27, 58, 0.45); }
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 0.75rem; min-height: 4rem;
}
.brand,
.wordmark {
  display: inline-flex; align-items: center; gap: 0.5em;
  font-family: var(--font-display); font-weight: 800; letter-spacing: -0.03em; line-height: 1;
  color: inherit; text-decoration: none;
}
.brand::before,
.wordmark::before {
  content: ""; flex: none; width: 0.72em; height: 0.72em;
  background: var(--b-accent); border-radius: var(--r-blob);
}
.brand { min-height: 2.75rem; font-size: 1.0625rem; }
.wordmark--xl { margin: 0; font-size: clamp(2rem, 1rem + 4.6vw, 4.5rem); }
.brand:hover::before, .wordmark:hover::before { border-radius: 40% 60% 45% 55% / 55% 45% 60% 40%; }

.site-nav__list { display: flex; align-items: center; gap: 0.25rem; list-style: none; }
.site-nav__link {
  position: relative; display: inline-flex; align-items: center; min-height: 2.75rem;
  padding-inline: 0.7rem; border-radius: var(--r-pill);
  font-family: var(--font-mono); font-size: var(--fs-mono); text-decoration: none; color: var(--b-ink);
}
.site-nav__link:hover { background: var(--b-ghost); }
.site-nav__link[aria-current="page"],
.site-nav__link.is-active { color: var(--b-accent-text); }
.site-nav__link[aria-current="page"]::after,
.site-nav__link.is-active::after {
  content: ""; position: absolute; inset-inline: 0.7rem; inset-block-end: 0.5rem;
  height: 3px; border-radius: var(--r-pill); background: var(--b-accent);
}
.nav-toggle {
  display: none; place-content: center; width: 2.75rem; height: 2.75rem; padding: 0;
  background: var(--b-ghost); border: 1px solid var(--b-line); border-radius: var(--r-sm);
  color: var(--b-ink); cursor: pointer;
}
.nav-toggle__bar { display: block; width: 1.25rem; height: 2px; background: currentColor; border-radius: 2px; }
.nav-toggle__bar + .nav-toggle__bar { margin-block-start: 6px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:first-of-type { transform: translateY(4px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-of-type(2) { transform: translateY(-4px) rotate(-45deg); }

@media (max-width: 767.98px) {
  .site-nav[data-collapsible] .nav-toggle { display: grid; }
  .site-nav[data-collapsible] .site-nav__list {
    display: none; position: absolute; inset-inline: 0; inset-block-start: 100%;
    flex-direction: column; align-items: stretch; gap: 0.25rem;
    padding: 1rem var(--gutter) 1.25rem;
    background: var(--bg); border-block-end: 1px solid var(--line-l);
  }
  .site-nav[data-collapsible].is-open .site-nav__list { display: flex; }
  .site-nav[data-collapsible] .site-nav__link { justify-content: flex-start; }
}

/* ---------- 5. Bands: alternating light/dark with slanted dividers ---------- */
.band {
  position: relative; isolation: isolate; overflow: hidden;
  background: var(--b-bg); color: var(--b-ink);
  padding-block: var(--space-section) calc(var(--space-section) + var(--slant));
}
.band + .band,
main + .band {
  clip-path: polygon(0 var(--slant), 100% 0, 100% 100%, 0 100%);
  margin-block-start: calc(var(--slant) * -1);
  padding-block-start: calc(var(--space-section) + var(--slant));
}
.band.band--flat { clip-path: none; margin-block-start: 0; padding-block-start: var(--space-section); }
.band > .container { position: relative; z-index: 1; }

.section-title { font-size: var(--fs-3); }
.section-lead { font-size: var(--fs-1); color: var(--b-soft); max-width: 40ch; }

/* decorative CSS shapes (blobs / squircles) + parallax */
.band__bg { position: absolute; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }
.shape {
  position: absolute; aspect-ratio: 1; width: clamp(9rem, 24vw, 20rem);
  border-radius: var(--r-blob); pointer-events: none;
}
.shape--squircle { border-radius: var(--r-squircle); }
.shape--dot { border-radius: 50%; }
.shape--accent { background: var(--accent-soft); }
.shape--ink { background: var(--b-ghost); }
.shape--ring { background: none; border: clamp(0.5rem, 1.2vw, 1rem) solid var(--accent-soft); border-radius: var(--r-squircle); }
.shape--lg { width: clamp(16rem, 46vw, 38rem); }
.shape--md { width: clamp(9rem, 24vw, 20rem); }
.shape--sm { width: clamp(3rem, 7vw, 6rem); }
.shape--tl { inset-block-start: -8%; inset-inline-start: -10%; }
.shape--tr { inset-block-start: -10%; inset-inline-end: -12%; }
.shape--bl { inset-block-end: 4%; inset-inline-start: -8%; }
.shape--br { inset-block-end: 8%; inset-inline-end: -6%; }
.shape--c { inset-block-start: 46%; inset-inline-start: 46%; }
.shape--far { --depth: 0.1; }
.shape--mid { --depth: 0.2; }
.shape--near { --depth: 0.35; }

/* ---------- 6. Hero ---------- */
.hero {
  background: var(--hero-glow), var(--b-bg);
  padding-block: clamp(2.5rem, 8vw, 6.5rem) calc(var(--slant) + 2rem);
}
.hero__inner { display: grid; gap: 2rem; align-items: center; }
.hero__copy { display: grid; gap: 1.25rem; justify-items: start; }
.hero__title { font-size: var(--fs-4); line-height: 1; letter-spacing: -0.04em; }
.hl {
  color: var(--b-accent-text);
  background: linear-gradient(var(--b-accent), var(--b-accent)) 0 94% / 100% 0.14em no-repeat;
  -webkit-box-decoration-break: clone; box-decoration-break: clone;
}
.hero__lead { font-size: var(--fs-1); color: var(--b-soft); max-width: 32ch; }
.hero__actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.5rem; margin-block-start: 0.75rem; }
.hero__note { font-family: var(--font-mono); font-size: var(--fs-mono); color: var(--b-soft); }
.hero__art { justify-self: end; width: min(11rem, 52vw); }
.hero--game { padding-block-end: calc(var(--slant) + 1rem); }
.hero--game .hero__title { font-size: clamp(2.25rem, 1.3rem + 5vw, 5rem); }

/* mini puzzle illustration (pure CSS) */
.puzzle-art {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.5rem;
  padding: 0.75rem; background: var(--b-card);
  border: 1px solid var(--b-line); border-radius: var(--r-lg);
  box-shadow: 0.45rem 0.45rem 0 var(--b-accent), 0.9rem 0.9rem 0 var(--b-ghost);
  transform: rotate(-4deg);
}
.puzzle-art__tile { aspect-ratio: 1; border-radius: var(--r-squircle); background: var(--b-ghost); border: 2px solid var(--b-line); }
.puzzle-art__tile--on { background: var(--b-accent); border-color: var(--b-accent); }
.puzzle-art__tile--ink { background: var(--b-ink); border-color: var(--b-ink); }
.puzzle-art__tile--ring { background: none; border-color: var(--b-accent-text); }
.puzzle-art__tile--blob { border-radius: var(--r-blob); }

/* marquee strip under the headline */
.marquee {
  position: relative; z-index: 1;
  width: 108%; margin: clamp(2.25rem, 6vw, 4rem) -4% 0;
  padding-block: 0.9rem; overflow: hidden;
  background: var(--b-ink); color: var(--b-bg);
  transform: rotate(-1.8deg);
}
.marquee__track { display: flex; flex-wrap: wrap; justify-content: center; }
.marquee__group {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 0.5rem 1rem; padding-inline: 1rem;
}
.marquee__group[aria-hidden="true"] { display: none; }
.marquee__item {
  display: inline-flex; align-items: center; gap: 1rem; white-space: nowrap;
  font-family: var(--font-mono); font-size: 1rem; font-weight: 600;
}
.marquee__item::after {
  content: ""; flex: none; width: 0.6rem; height: 0.6rem;
  background: var(--b-accent); border-radius: var(--r-blob);
}

/* ---------- 7. About + project cards ---------- */
.about__head { display: grid; gap: 1.75rem; margin-block-end: clamp(2rem, 5vw, 3.5rem); }
.philosophy {
  position: relative; margin: 0; padding-block-start: 1.5rem;
  font-family: var(--font-display); font-weight: 600; line-height: 1.25; letter-spacing: -0.015em;
  font-size: clamp(1.375rem, 1rem + 2vw, 2.375rem); text-wrap: balance;
}
.philosophy::before {
  content: ""; position: absolute; inset-block-start: 0; inset-inline-start: 0;
  width: 3.5rem; height: 0.6rem; border-radius: var(--r-pill); background: var(--b-accent);
}

.card {
  background: var(--b-card); border: 1px solid var(--b-line); border-radius: var(--r-lg);
  padding: clamp(1.25rem, 3vw, 2rem);
  box-shadow: 0.4rem 0.4rem 0 var(--accent-soft);
}
.project-grid { display: grid; gap: 1.25rem; list-style: none; }
.project-card {
  display: flex; flex-direction: column;
  background: var(--b-card); border: 1px solid var(--b-line); border-radius: var(--r-lg);
  box-shadow: 0.4rem 0.4rem 0 var(--accent-soft);
}
.project-card__cover {
  position: relative; overflow: hidden; flex: none;
  aspect-ratio: 16 / 9; margin: 0.75rem 0.75rem 0; border-radius: var(--r-md);
  background: linear-gradient(135deg, var(--accent-soft), transparent 70%), var(--b-ghost);
}
.project-card__cover::before {
  content: ""; position: absolute; inset-block-end: -18%; inset-inline-start: 10%;
  width: 52%; aspect-ratio: 1; background: var(--b-accent); border-radius: var(--r-blob);
}
.project-card__cover::after {
  content: ""; position: absolute; inset-block-start: 14%; inset-inline-end: 12%;
  width: 22%; aspect-ratio: 1; border: 4px solid var(--b-ink); border-radius: var(--r-squircle); opacity: 0.55;
}
.project-card:nth-child(2) .project-card__cover::before { inset-inline-start: auto; inset-inline-end: 8%; border-radius: var(--r-squircle); width: 40%; }
.project-card:nth-child(2) .project-card__cover::after { inset-inline-end: auto; inset-inline-start: 14%; border-radius: 50%; }
.project-card:nth-child(3) .project-card__cover::before { inset-inline-start: 30%; inset-block-end: -30%; width: 64%; border-radius: 50%; }
.project-card:nth-child(3) .project-card__cover::after { border-radius: var(--r-blob); }
.project-card__body { display: grid; gap: 0.6rem; justify-items: start; padding: 1.1rem 1.25rem 1.4rem; }
.project-card__title { font-size: var(--fs-2); }
.project-card__text { color: var(--b-soft); font-size: 0.9375rem; }

.chip-row { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.chip {
  display: inline-flex; align-items: center; padding: 0.35rem 0.9rem;
  background: none; border: 1px solid var(--b-line); border-radius: var(--r-pill);
  color: var(--b-ink); font-family: var(--font-mono); font-size: var(--fs-mono); text-decoration: none;
}
a.chip, button.chip { min-height: 2.75rem; cursor: pointer; }
.chip:hover { background: var(--b-ghost); }
.chip.is-active, .chip[aria-pressed="true"] { background: var(--b-ink); color: var(--b-bg); border-color: var(--b-ink); }

/* ---------- 8. CTA band ---------- */
.cta__panel {
  display: grid; gap: 1.25rem;
  padding: clamp(1.5rem, 5vw, 3.5rem);
  background: var(--b-card); border: 1px solid var(--b-line); border-radius: var(--r-lg);
  box-shadow: 0.45rem 0.45rem 0 var(--b-accent), 0.9rem 0.9rem 0 var(--b-ghost);
}
.cta__title { font-size: var(--fs-3); max-width: 16ch; }
.cta__foot { grid-column: 1 / -1; font-family: var(--font-mono); font-size: var(--fs-mono); color: var(--b-soft); }

/* ---------- 9. Footer (minimal single row) ---------- */
.band.site-footer {
  --slant: clamp(1.25rem, 3vw, 3rem);
  padding-block: calc(var(--slant) + 1.25rem) 1.25rem;
}
.site-footer__inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.5rem 1.5rem; }
.site-footer .wordmark { font-size: 1.125rem; min-height: 2.75rem; }
.footer-nav__list { display: flex; flex-wrap: wrap; gap: 0 1rem; list-style: none; }
.footer-nav__link {
  display: inline-flex; align-items: center; min-height: 2.75rem;
  font-family: var(--font-mono); font-size: var(--fs-mono); color: var(--b-soft);
  text-decoration: underline; text-decoration-color: transparent;
}
.footer-nav__link:hover { color: var(--b-ink); text-decoration-color: var(--b-accent); text-decoration-thickness: 2px; }
.site-footer__legal { font-family: var(--font-mono); font-size: 0.75rem; color: var(--b-soft); }

/* ---------- 10. Game hero: greeting + countdown ---------- */
.greeting {
  display: inline-flex; align-items: center; gap: 0.7rem;
  font-family: var(--font-mono); font-size: 0.9375rem; font-weight: 600; color: var(--b-accent-text);
}
.greeting::before {
  content: ""; flex: none; width: 1.15rem; height: 1.15rem; border-radius: 50%;
  background: var(--b-accent); box-shadow: 0 0 0 0.25rem var(--accent-soft);   /* morning: sun */
}
html[data-theme="evening"] .greeting::before {                                 /* evening: setting sun */
  background: linear-gradient(to top, var(--b-accent) 50%, transparent 50%);
  border: 2px solid var(--b-accent); box-shadow: none;
}
html[data-theme="midnight"] .greeting::before {                                /* midnight: crescent */
  background: none; box-shadow: inset -0.38rem -0.1rem 0 0 var(--b-accent);
}
.countdown {
  display: inline-flex; flex-wrap: wrap; align-items: center; gap: 0.25rem 0.75rem;
  padding: 0.6rem 1.1rem 0.6rem 0.9rem;
  background: var(--b-card); border: 1px solid var(--b-line); border-radius: var(--r-md);
  font-family: var(--font-mono);
}
.countdown::before { content: ""; width: 0.65rem; height: 0.65rem; border-radius: 50%; background: var(--b-accent); }
.countdown__label { font-size: var(--fs-mono); color: var(--b-soft); }
.countdown__value { font-size: 1.25rem; font-weight: 700; letter-spacing: 0.05em; font-variant-numeric: tabular-nums; color: var(--b-ink); }

/* ---------- 11. Puzzle ---------- */
.puzzle-layout { display: grid; gap: 2rem; align-items: start; }
.puzzle-layout > .puzzle { width: 100%; max-width: 36rem; }
.puzzle {
  --cell-gap: 0.5rem;
  position: relative; padding: clamp(1rem, 3vw, 2rem);
  background: var(--b-card); border: 1px solid var(--b-line); border-radius: var(--r-lg);
  box-shadow: 0.5rem 0.5rem 0 var(--accent-soft);
}
.puzzle[data-state="solved"], .puzzle.is-solved { box-shadow: 0.5rem 0.5rem 0 var(--b-accent); }
.puzzle__header { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 0.35rem 1rem; margin-block-end: 0.75rem; }
.puzzle__title { font-size: var(--fs-2); }
.puzzle__meta { display: flex; gap: 0.75rem; font-family: var(--font-mono); font-size: var(--fs-mono); color: var(--b-soft); }
.puzzle__rule { color: var(--b-soft); margin-block-end: 1.25rem; }
.puzzle__board {
  --cols: 4;
  display: grid; grid-template-columns: repeat(var(--cols), minmax(0, 1fr)); gap: var(--cell-gap);
  width: 100%; max-width: 26rem; margin-inline: auto;
  touch-action: manipulation; -webkit-user-select: none; user-select: none;
}
.puzzle__board[data-cols="3"] { --cols: 3; }
.puzzle__board[data-cols="4"] { --cols: 4; }
.puzzle__board[data-cols="5"] { --cols: 5; }
.puzzle__board[data-cols="6"] { --cols: 6; }
.puzzle__board[data-cols="7"] { --cols: 7; }
.puzzle__cell {
  appearance: none; -webkit-appearance: none;
  display: grid; place-items: center; aspect-ratio: 1; min-width: 0; min-height: 2.75rem; padding: 0;
  background: var(--b-ghost); color: var(--b-ink);
  border: 2px solid var(--b-line); border-radius: var(--r-squircle);
  font-family: var(--font-mono); font-weight: 700; cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.15s var(--ease), box-shadow 0.25s var(--ease);
}
.puzzle__cell:hover { border-color: var(--b-accent); }
.puzzle__cell:active { transform: scale(0.94); }
.puzzle__cell.is-on,
.puzzle__cell.is-selected,
.puzzle__cell[aria-pressed="true"] {
  background: var(--b-accent); border-color: var(--b-accent); color: var(--chip-ink-fixed);
  box-shadow: 0 0 1.25rem var(--accent-soft);
}
.puzzle__cell.is-correct { border-color: var(--b-ink); }
.puzzle__cell.is-wrong { border-style: dashed; border-color: var(--b-accent-text); }
.puzzle__cell.is-hint { outline: 3px dashed var(--b-accent-text); outline-offset: 2px; }
.puzzle__cell.is-locked, .puzzle__cell:disabled { cursor: default; }
.puzzle__cell:focus-visible { outline: 3px solid var(--b-ink); outline-offset: 3px; }
.puzzle.is-solved .puzzle__cell, .puzzle[data-state="solved"] .puzzle__cell { pointer-events: none; }

.puzzle__choices { display: grid; gap: 0.5rem; grid-template-columns: repeat(auto-fit, minmax(7rem, 1fr)); margin-block-start: 1rem; }
.puzzle__choice {
  min-height: 3rem; padding: 0.5rem 0.9rem; cursor: pointer;
  background: var(--b-ghost); color: var(--b-ink);
  border: 2px solid var(--b-line); border-radius: var(--r-sm); font-weight: 700;
}
.puzzle__choice:hover { border-color: var(--b-accent); }
.puzzle__choice.is-selected { background: var(--b-accent); border-color: var(--b-accent); color: var(--chip-ink-fixed); }
.puzzle__choice.is-correct { border-color: var(--b-ink); box-shadow: 0 0 0 2px var(--b-accent); }
.puzzle__choice.is-wrong { border-style: dashed; border-color: var(--b-accent-text); }

.puzzle__status {
  display: flex; align-items: center; gap: 0.6rem; min-height: 3rem; margin-block-start: 1rem;
  font-weight: 600; color: var(--b-ink);
}
.puzzle__status.is-success { color: var(--b-accent-text); }
.puzzle__status.is-success::before, .puzzle__status.is-error::before {
  content: ""; flex: none; width: 0.8rem; height: 0.8rem; border-radius: var(--r-blob);
}
.puzzle__status.is-success::before { background: var(--b-accent); }
.puzzle__status.is-error::before { border: 2px dashed var(--b-accent-text); }
.puzzle__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-block-start: 0.75rem; }
.puzzle__result {
  display: grid; gap: 0.5rem; margin-block-start: 1.25rem; padding: 1rem 1.25rem;
  background: var(--b-ghost); border: 1px dashed var(--b-accent-text); border-radius: var(--r-md);
}
.puzzle__note { font-family: var(--font-mono); font-size: var(--fs-mono); color: var(--b-soft); }

.puzzle-aside { display: grid; gap: 1.25rem; }
.rules { display: grid; gap: 1rem; list-style: none; counter-reset: rule; }
.rules li { counter-increment: rule; display: grid; grid-template-columns: 2.5rem 1fr; gap: 0.9rem; align-items: start; color: var(--b-soft); }
.rules li::before {
  content: counter(rule); display: grid; place-items: center; width: 2.5rem; aspect-ratio: 1;
  background: var(--b-ghost); border: 1px solid var(--b-line); border-radius: var(--r-squircle);
  font-family: var(--font-mono); font-weight: 700; color: var(--b-accent-text);
}

/* ---------- 12. Forms ---------- */
.field { display: grid; gap: 0.4rem; }
.field__label { font-family: var(--font-mono); font-size: var(--fs-mono); font-weight: 600; }
.input, .textarea, .select {
  width: 100%; min-height: 2.875rem; padding: 0.65rem 0.9rem;
  background: var(--b-card); color: var(--b-ink);
  border: 2px solid var(--b-line); border-radius: var(--r-sm); font: inherit;
}
.textarea { min-height: 8rem; resize: vertical; }
.input:hover, .textarea:hover, .select:hover { border-color: var(--b-soft); }
.input:focus-visible, .textarea:focus-visible, .select:focus-visible { outline: 3px solid var(--b-ink); outline-offset: 2px; border-color: var(--b-ink); }
.input[aria-invalid="true"], .is-invalid .input, .is-invalid .textarea { border-color: var(--b-accent-text); border-style: dashed; }
.is-valid .input, .is-valid .textarea { border-color: var(--b-ink); }
.input:disabled, .textarea:disabled, .select:disabled { opacity: 0.55; cursor: not-allowed; }
.field__hint { font-size: 0.875rem; color: var(--b-soft); }
.field__error { font-size: 0.875rem; font-weight: 600; color: var(--b-accent-text); }

/* ---------- 13. Content documents ---------- */
.prose { max-width: 68ch; }
.prose > * + * { margin-block-start: 1.1em; }
.prose h2 { font-size: var(--fs-3); margin-block-start: 1.8em; }
.prose h3 { font-size: var(--fs-2); margin-block-start: 1.5em; }
.prose ul, .prose ol { padding-inline-start: 1.4em; }
.prose li + li { margin-block-start: 0.4em; }
.prose a { color: var(--b-accent-text); font-weight: 600; }
.prose blockquote { margin-inline: 0; padding-inline-start: 1.1rem; border-inline-start: 4px solid var(--b-accent); color: var(--b-soft); }

/* ---------- 14. Motion (only when the visitor allows it) ---------- */
@keyframes rise { from { opacity: 0; transform: translateY(1.25rem); } to { opacity: 1; transform: none; } }
@keyframes marquee { to { transform: translate3d(-50%, 0, 0); } }
@keyframes morph {
  0%, 100% { border-radius: 62% 38% 55% 45% / 48% 58% 42% 52%; }
  50% { border-radius: 42% 58% 38% 62% / 58% 42% 60% 40%; }
}
@keyframes drift { from { translate: 0 0; } to { translate: 0 -1.25rem; } }
@keyframes bob { from { transform: translateY(0); } to { transform: translateY(-0.2rem); } }
@keyframes twinkle { from { opacity: 0.45; } to { opacity: 1; } }
@keyframes pulse { 0%, 100% { box-shadow: 0 0 0 0 var(--accent-soft); } 50% { box-shadow: 0 0 0 0.45rem transparent; } }
@keyframes pop { 0% { transform: scale(1); } 45% { transform: scale(1.12); } 100% { transform: scale(1); } }
@keyframes shake { 20%, 60% { transform: translateX(-4px); } 40%, 80% { transform: translateX(4px); } }

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
  .hero__copy > * { animation: rise 0.8s var(--ease) both; }
  .hero__copy > :nth-child(2) { animation-delay: 0.08s; }
  .hero__copy > :nth-child(3) { animation-delay: 0.16s; }
  .hero__copy > :nth-child(4) { animation-delay: 0.24s; }

  .parallax,
  .shape {
    transform: translate3d(0, clamp(-140px, calc(var(--parallax-y, 0px) * var(--depth, 0.15)), 140px), 0);
    will-change: transform;
  }
  .hero__art { --depth: -0.06; }
  .shape--blob { animation: morph 18s ease-in-out infinite; }
  .shape { animation-name: drift; animation-duration: 14s; animation-timing-function: ease-in-out; animation-iteration-count: infinite; animation-direction: alternate; }
  .shape--blob { animation: morph 18s ease-in-out infinite, drift 14s ease-in-out infinite alternate; }
  .puzzle-art__tile--on { animation: bob 5s ease-in-out infinite alternate; }
  .puzzle-art__tile:nth-child(odd) { animation-delay: -2s; }
  .countdown::before { animation: pulse 2.4s ease-in-out infinite; }
  html[data-theme="midnight"] .hero .band__bg::after { animation: twinkle 6s ease-in-out infinite alternate; }

  .marquee__track { flex-wrap: nowrap; justify-content: flex-start; width: max-content; animation: marquee 34s linear infinite; }
  .marquee__group { flex-wrap: nowrap; flex: none; min-width: 100vw; justify-content: space-around; padding-inline: 0 1rem; }
  .marquee__group[aria-hidden="true"] { display: flex; }
  .marquee:hover .marquee__track,
  .marquee.is-paused .marquee__track { animation-play-state: paused; }

  .puzzle.is-solved .puzzle__cell,
  .puzzle[data-state="solved"] .puzzle__cell { animation: pop 0.6s var(--ease) both; animation-delay: calc(var(--i, 0) * 30ms); }
  .puzzle__cell.is-wrong { animation: shake 0.4s; }
  .band__bg + .container, .nav-toggle__bar { transition: transform 0.2s var(--ease); }
}

/* midnight stars (decorative) */
html[data-theme="midnight"] .hero .band__bg::after {
  content: ""; position: absolute; inset: 0;
  background-image:
    radial-gradient(1.5px 1.5px at 12% 22%, rgba(255, 244, 224, 0.85), transparent 100%),
    radial-gradient(1px 1px at 28% 68%, rgba(255, 244, 224, 0.7), transparent 100%),
    radial-gradient(2px 2px at 64% 18%, rgba(255, 244, 224, 0.8), transparent 100%),
    radial-gradient(1px 1px at 82% 54%, rgba(255, 244, 224, 0.7), transparent 100%),
    radial-gradient(1.5px 1.5px at 90% 84%, rgba(255, 244, 224, 0.75), transparent 100%),
    radial-gradient(1px 1px at 46% 40%, rgba(255, 244, 224, 0.6), transparent 100%);
}

/* ---------- 15. Breakpoints (mobile-first) ---------- */
@media (min-width: 360px) {
  .puzzle { --cell-gap: 0.625rem; }
  .brand { font-size: 1.125rem; }
  .btn__label { font-size: 1rem; }
  .btn--sm .btn__label { font-size: 0.9375rem; }
}

@media (min-width: 768px) {
  .hero__inner { grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr); gap: 3rem; }
  .hero__art { width: min(100%, 17rem); }
  .marquee { transform: rotate(-1.2deg); }

  .about__head { grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); align-items: end; gap: 3rem; }
  .project-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .project-grid > :first-child { grid-column: 1 / -1; }
  .project-grid > :first-child .project-card__cover { aspect-ratio: 21 / 8; }

  .cta__panel { grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 1.5rem 2.5rem; }

  .puzzle-layout { grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); gap: 3rem; }
  .site-footer__inner { flex-wrap: nowrap; }
}

@media (min-width: 1200px) {
  :root { --container: 74rem; --slant: clamp(4rem, 5.5vw, 6.5rem); }
  .hero__inner { gap: 5rem; }
  .hero__art { width: min(100%, 20rem); }
  .project-grid { grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 1.5rem; }
  .project-grid > :first-child { grid-column: 1; grid-row: span 2; }
  .project-grid > :first-child .project-card__cover { aspect-ratio: 4 / 3; flex: 1 1 auto; }
  .puzzle-layout { grid-template-columns: minmax(0, 36rem) minmax(0, 1fr); gap: 5rem; }
  .puzzle { padding: 2rem; }
}

/* ---------- 16. RTL support (not primary: site is ltr) ---------- */
[dir="rtl"] body { font-family: var(--mrc-font-fa, system-ui), system-ui, sans-serif; }
[dir="rtl"] h1, [dir="rtl"] h2, [dir="rtl"] h3, [dir="rtl"] .wordmark, [dir="rtl"] .brand {
  font-family: var(--mrc-font-fa-display, var(--mrc-font-fa, system-ui)), system-ui, sans-serif; letter-spacing: 0;
}
[dir="rtl"] .btn__icon { transform: scaleX(-1); }
[dir="rtl"] .btn__chip:empty::before { content: "\2190"; }
[dir="rtl"] .marquee__track { animation-direction: reverse; }

/* ---------- 17. Reduced motion safety net ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
  .parallax, .shape { transform: none !important; }
}