/* ============================================================
   LUUQ STUDIO — MAIN STYLES
   Sections & components. Reads top→bottom in page order.
   ============================================================ */

/* ---------- Atmosphere: grain + glow (fixed backdrop) ------- */
.backdrop { position: fixed; inset: 0; z-index: var(--z-bg); pointer-events: none; overflow: hidden; }
.backdrop .glow {
  position: absolute; border-radius: 50%; filter: blur(20px); opacity: .5;
  background: radial-gradient(circle at center, rgba(122,107,255,.5), rgba(122,107,255,0) 62%);
}
.backdrop .glow--1 { width: 62vw; height: 62vw; top: -22vw; left: 50%; transform: translateX(-50%);
  background: radial-gradient(circle at center, rgba(79,124,255,.35), rgba(139,92,246,.14) 45%, transparent 66%); }
.backdrop .glow--2 { width: 40vw; height: 40vw; bottom: -12vw; right: -8vw; opacity: .35;
  background: radial-gradient(circle at center, rgba(139,92,246,.35), transparent 64%); }
.backdrop .grain {
  position: absolute; inset: -200%; width: 400%; height: 400%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: .035; mix-blend-mode: overlay;
}

/* ---------- Custom cursor: removed (native cursor, premium restraint) ---------- */
.cursor, .cursor-dot { display: none !important; }

/* ---------- Loader ----------------------------------------- */
.loader { position: fixed; inset: 0; z-index: var(--z-loader); background: var(--bg);
  display: grid; place-items: center; transition: opacity .6s var(--ease-out), visibility .6s; }
.loader.is-done { opacity: 0; visibility: hidden; }
.loader__inner { display: flex; flex-direction: column; align-items: center; gap: var(--sp-6); }
.loader__count { font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: var(--track-wide); color: var(--text-muted); }
.loader__bar { width: 180px; height: 2px; background: var(--border); overflow: hidden; border-radius: 2px; }
.loader__bar span { display: block; height: 100%; width: 0; background: var(--gradient); transition: width .2s linear; }

/* ---------- Buttons ---------------------------------------- */
.btn { display: inline-flex; align-items: center; gap: .6em; padding: .85em 1.5em; border-radius: var(--r-full);
  font-family: var(--font-sans); font-weight: var(--w-medium); font-size: .95rem; letter-spacing: -0.01em; white-space: nowrap;
  transition: transform var(--dur-base) var(--ease-out), background var(--dur-base) var(--ease-out), color var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out);
  will-change: transform; }
.btn svg { width: 1em; height: 1em; }
.btn--primary { background: var(--text); color: #0a0a0c; }
.btn--primary:hover { background: #fff; }
.btn--ghost { border: 1px solid var(--border-strong); color: var(--text); }
.btn--ghost:hover { border-color: transparent; background: var(--surface-2); }
.btn--lg { padding: 1.05em 1.9em; font-size: 1rem; }
.btn .arrow { transition: transform var(--dur-base) var(--ease-out); }
.btn:hover .arrow { transform: translateX(4px); }

/* ---------- Header / nav ----------------------------------- */
.header { position: fixed; top: 0; inset-inline: 0; z-index: var(--z-header);
  display: flex; justify-content: center; padding-top: clamp(.75rem, 1.5vw, 1.25rem);
  transition: transform var(--dur-slow) var(--ease-out); }
.header.is-hidden { transform: translateY(-140%); }
.nav { display: flex; align-items: center; gap: var(--sp-8);
  width: min(var(--container-wide), calc(100% - 2 * var(--gutter)));
  padding: .55rem .65rem .55rem 1.1rem; border-radius: var(--r-full);
  border: 1px solid var(--border); background: rgba(12,12,16,.55);
  backdrop-filter: blur(16px) saturate(140%); -webkit-backdrop-filter: blur(16px) saturate(140%); }
.nav__brand { display: inline-flex; align-items: center; gap: .6rem; margin-right: auto; }
.logo-mark { width: 30px; height: 30px; flex: none; }
.brand-word { font-family: var(--font-display); font-weight: var(--w-bold); font-size: 1.05rem; letter-spacing: .01em; line-height: 1; display: inline-flex; align-items: baseline; gap: .4rem; }
.brand-word .sub { font-family: var(--font-mono); font-weight: var(--w-regular); font-size: .58rem; letter-spacing: var(--track-wide); color: var(--text-muted); }
.nav__links { display: flex; align-items: center; gap: var(--sp-6); }
.nav__links a { font-size: .92rem; color: var(--text-muted); transition: color var(--dur-base) var(--ease-out); position: relative; }
.nav__links a:hover { color: var(--text); }
.nav__links a::after { content: ""; position: absolute; left: 0; bottom: -4px; width: 0; height: 1px; background: var(--gradient); transition: width var(--dur-base) var(--ease-out); }
.nav__links a:hover::after { width: 100%; }
.nav__actions { display: flex; align-items: center; gap: var(--sp-3); }
.lang { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .06em; color: var(--text-muted); border: 1px solid var(--border); border-radius: var(--r-full); padding: .35rem .6rem; transition: color var(--dur-base), border-color var(--dur-base); }
.lang:hover { color: var(--text); border-color: var(--border-strong); }
.nav__toggle { display: none; width: 44px; height: 44px; border-radius: var(--r-full); border: 1px solid var(--border); }
.nav__toggle span { display: block; width: 16px; height: 1.5px; background: var(--text); margin: 3px auto; }

/* ---------- Hero ------------------------------------------- */
/* .hero-shell is the positioning context for the background loop,
   the scroll cue and the pause toggle. */
.hero-shell { position: relative; isolation: isolate; }
.hero { position: relative; z-index: var(--z-content); min-height: 100svh; display: flex; align-items: center; padding-top: 8rem; padding-bottom: var(--sp-16); }

/* Background loop: full-bleed, behind everything in the shell. */
.hero-media { position: absolute; inset: 0; z-index: var(--z-bg); overflow: hidden; pointer-events: none; background: var(--bg); }
.hero-media__video { display: block; width: 100%; height: 100%; object-fit: cover; }
/* Two jobs: keep text legible over ANY footage, and dissolve the
   video into the page canvas so the next section starts seamlessly.
   Built on --bg via color-mix so it tracks the active theme instead of
   assuming a dark canvas. */
.hero-media__scrim {
  position: absolute; inset: 0;
  background:
    linear-gradient(to bottom,
      color-mix(in srgb, var(--bg) 55%, transparent) 0%,
      color-mix(in srgb, var(--bg) 30%, transparent) 45%,
      var(--bg) 100%),
    radial-gradient(120% 85% at 12% 30%,
      color-mix(in srgb, var(--bg) 45%, transparent) 0%,
      color-mix(in srgb, var(--bg) 12%, transparent) 60%,
      transparent 100%);
}
/* The loop is authored for the near-black canvas; on the light theme it
   would read as a grey smudge, so the hero simply goes back to flat. */
:root[data-theme="light"] .hero-media__video,
:root[data-theme="light"] .hero-media__toggle { display: none; }

/* Pause toggle — WCAG 2.2.2: auto-playing motion needs a stop control.
   Revealed by JS only (hidden attribute in markup), so no-JS never
   shows a dead button. */
.hero-media__toggle {
  /* top-right, clear of the header and of the floating .theme-dock.
     Anchored to the top because the shell can outgrow the viewport. */
  position: absolute; right: 1.25rem; top: 7.5rem; z-index: var(--z-content);
  width: 40px; height: 40px; display: grid; place-items: center;
  border: 1px solid var(--border-strong); border-radius: var(--r-full);
  background: var(--surface); color: var(--text-muted); cursor: pointer;
  backdrop-filter: blur(8px);
}
/* author `display` would otherwise beat the UA rule for [hidden] */
.hero-media__toggle[hidden] { display: none; }
.hero-media__toggle:hover { background: var(--surface-2); color: var(--text); border-color: var(--ring); }
.hero-media__toggle-icon { width: 10px; height: 11px; background: currentColor;
  /* pause bars */
  clip-path: polygon(0 0, 36% 0, 36% 100%, 0 100%, 0 0, 64% 0, 100% 0, 100% 100%, 64% 100%, 64% 0); }
.hero-media__toggle[aria-pressed="true"] .hero-media__toggle-icon {
  /* play triangle */
  clip-path: polygon(0 0, 100% 50%, 0 100%); }

/* No `autoplay` attribute in the markup on purpose: JS starts playback only
   when motion is allowed, so no-JS and reduced-motion both land on the
   poster frame instead of a moving background we cannot stop. */
.hero__grid { display: grid; gap: var(--sp-8); }
.hero__title { font-size: var(--fs-display); font-weight: var(--w-medium); line-height: var(--lh-tight); letter-spacing: var(--track-tight); max-width: 16ch; }
.hero__lead { font-size: var(--fs-lead); color: var(--text-muted); max-width: 52ch; font-weight: var(--w-light); }
.hero__cta { display: flex; flex-wrap: wrap; gap: var(--sp-4); margin-top: var(--sp-2); }
.hero__meta { display: flex; gap: var(--sp-8); flex-wrap: wrap; margin-top: var(--sp-8); padding-top: var(--sp-8); border-top: 1px solid var(--border); }
.hero__meta .item { display: flex; flex-direction: column; gap: .25rem; }
.hero__meta .k { font-family: var(--font-mono); font-size: .72rem; letter-spacing: var(--track-wide); text-transform: uppercase; color: var(--text-faint); }
.hero__meta .v { font-family: var(--font-display); font-size: 1.05rem; color: var(--text); }
.scroll-cue { position: absolute; left: var(--gutter); bottom: 2rem; font-family: var(--font-mono); font-size: .7rem; letter-spacing: var(--track-wide); color: var(--text-faint); display: flex; align-items: center; gap: .6rem; text-transform: uppercase; }
.scroll-cue .line { width: 1px; height: 34px; background: linear-gradient(var(--text-faint), transparent); position: relative; overflow: hidden; }
.scroll-cue .line::after { content:""; position:absolute; inset:0; background: var(--gradient); animation: scrollpulse 2.2s var(--ease-inout) infinite; }
@keyframes scrollpulse { 0%{transform:translateY(-100%)} 60%,100%{transform:translateY(100%)} }

/* ---------- Marquee ---------------------------------------- */
.marquee { border-block: 1px solid var(--border); padding-block: 1.1rem; overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.marquee__track { display: flex; gap: 3rem; width: max-content; animation: marquee 34s linear infinite; }
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee__track span { font-family: var(--font-display); font-size: clamp(1rem, .9rem + .8vw, 1.5rem); color: var(--text-muted); display: inline-flex; align-items: center; gap: 3rem; letter-spacing: -0.01em; }
.marquee__track span::after { content: "✦"; color: var(--c-indigo); font-size: .7em; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Section header --------------------------------- */
.sec-head { display: flex; flex-direction: column; gap: var(--sp-3); max-width: 60ch; margin-bottom: var(--sp-8); }
.sec-head h2 { font-size: var(--fs-h2); letter-spacing: var(--track-snug); }
.sec-head p { color: var(--text-muted); font-size: var(--fs-lead); font-weight: var(--w-light); }

/* ---------- The Model (process steps) ---------------------- */
.steps { display: grid; gap: 0; border-top: 1px solid var(--border); }
.step { display: grid; grid-template-columns: 5rem 1fr; gap: var(--sp-8); padding-block: var(--sp-8);
  border-bottom: 1px solid var(--border); align-items: start; transition: background var(--dur-base) var(--ease-out); }
.step:hover { background: linear-gradient(90deg, var(--surface), transparent); }
.step__num { font-family: var(--font-mono); font-size: .85rem; color: var(--text-faint); padding-top: .4rem; }
.step__num b { display: block; font-family: var(--font-display); font-size: clamp(1.5rem, 1rem + 2vw, 2.6rem); color: transparent; -webkit-text-stroke: 1px var(--border-strong); }
.step:hover .step__num b { -webkit-text-stroke: 1px transparent; background: var(--gradient); -webkit-background-clip: text; background-clip: text; }
.step__body { max-width: 60ch; }
.step__body h3 { font-size: var(--fs-h3); margin-bottom: .5rem; }
.step__body p { color: var(--text-muted); font-weight: var(--w-light); }

/* ---------- Ecosystem (bento) ------------------------------ */
.bento { display: grid; grid-template-columns: repeat(6, 1fr); gap: clamp(.75rem, 1.2vw, 1.1rem); grid-auto-rows: minmax(150px, auto); }
.cell { position: relative; overflow: hidden; border: 1px solid var(--border); border-radius: var(--r-lg);
  background: var(--surface); padding: var(--sp-8); display: flex; flex-direction: column; justify-content: space-between; gap: var(--sp-8);
  transition: border-color var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out), background var(--dur-base) var(--ease-out); }
.cell::before { content: ""; position: absolute; inset: 0; background: radial-gradient(120% 120% at 100% 0%, rgba(122,107,255,.12), transparent 55%); opacity: 0; transition: opacity var(--dur-base) var(--ease-out); pointer-events: none; }
.cell:hover { border-color: var(--border-strong); transform: translateY(-3px); }
.cell:hover::before { opacity: 1; }
.cell__idx { font-family: var(--font-mono); font-size: .72rem; color: var(--text-faint); letter-spacing: .1em; }
.cell h3 { font-size: var(--fs-h3); }
.cell p { color: var(--text-muted); font-weight: var(--w-light); font-size: .96rem; }
.cell--lg { grid-column: span 3; grid-row: span 2; }
.cell--md { grid-column: span 3; }
.cell--sm { grid-column: span 2; }
.cell--feature { background: linear-gradient(135deg, rgba(79,124,255,.14), rgba(139,92,246,.1)); border-color: var(--border-strong); }
.cell--feature h3 { font-size: var(--fs-h2); max-width: 14ch; }

/* ---------- Values ----------------------------------------- */
.values { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 0; border-top: 1px solid var(--border); }
.value { padding: var(--sp-8) var(--sp-8) var(--sp-12); border-bottom: 1px solid var(--border); border-right: 1px solid var(--border); }
.value__k { font-family: var(--font-mono); font-size: .72rem; color: var(--text-faint); letter-spacing: .12em; margin-bottom: var(--sp-6); }
.value h3 { font-size: var(--fs-h3); margin-bottom: .6rem; }
.value p { color: var(--text-muted); font-weight: var(--w-light); font-size: .96rem; }

/* ---------- Beyond (big statement) ------------------------- */
/* ---------- Project showcase (panel-managed) ---------------- */
.projects { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: var(--sp-6); margin-top: var(--sp-8); }
.project { position: relative; display: flex; flex-direction: column; border: 1px solid var(--border); border-radius: var(--r-lg);
  background: var(--surface); overflow: hidden; color: inherit; text-decoration: none;
  transition: border-color var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out); }
a.project:hover { border-color: var(--border-strong); background: var(--surface-2); transform: translateY(-3px); }
.project__media { aspect-ratio: 3 / 2; overflow: hidden; background: var(--bg-elev-1); }
.project__media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.project__body { padding: var(--sp-6); display: flex; flex-direction: column; gap: .55rem; }
.project__meta { display: flex; gap: .6rem; align-items: baseline; font-family: var(--font-mono); font-size: .7rem;
  letter-spacing: var(--track-wide); text-transform: uppercase; color: var(--text-faint); }
.project__meta .project__year { margin-left: auto; }
.project__name { font-size: 1.15rem; font-weight: var(--w-medium); line-height: var(--lh-tight); }
.project__sector { font-size: .8rem; color: var(--text-muted); }
.project__desc { font-size: .92rem; color: var(--text-muted); font-weight: var(--w-light); line-height: 1.6; }
.project__tags { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .3rem; }
.project__tags span { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .04em; color: var(--text-faint);
  border: 1px solid var(--border); border-radius: var(--r-full); padding: .18rem .55rem; }
.project__go { position: absolute; top: var(--sp-4); right: var(--sp-4); color: var(--text-faint); font-size: .95rem;
  opacity: 0; transition: opacity var(--dur-fast) var(--ease-out); }
a.project:hover .project__go { opacity: 1; }
/* Cover-less entries read as a quote card rather than a broken image slot. */
.project--text .project__body { padding-top: var(--sp-8); }
@media (max-width: 560px) { .projects { grid-template-columns: 1fr; } }

.beyond { text-align: left; }
.beyond p { font-family: var(--font-display); font-size: var(--fs-statement); line-height: 1.1; letter-spacing: var(--track-tight); max-width: 20ch; font-weight: var(--w-light); }
.beyond .hl { color: var(--text); }

/* ---------- Contact ---------------------------------------- */
.contact__grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: var(--sp-24); align-items: start; }
.contact h2 { font-size: var(--fs-display); line-height: var(--lh-tight); letter-spacing: var(--track-tight); max-width: 12ch; }
.contact__mail { display: inline-flex; align-items: center; gap: .6rem; margin-top: var(--sp-8); font-family: var(--font-display); font-size: var(--fs-h3); }
.contact__mail:hover .grad-text { opacity: .85; }
.form { display: flex; flex-direction: column; gap: var(--sp-4); }
.field { display: flex; flex-direction: column; gap: .5rem; }
.field label { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--text-faint); }
.field input, .field textarea { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-md); padding: .9rem 1rem; color: var(--text); transition: border-color var(--dur-base); }
.field input:focus, .field textarea:focus { border-color: var(--border-strong); }
.field textarea { resize: vertical; min-height: 120px; }

/* ---------- Footer ----------------------------------------- */
.footer { border-top: 1px solid var(--border); padding-block: var(--sp-16) var(--sp-8); }
.footer__top { display: flex; justify-content: space-between; gap: var(--sp-16); flex-wrap: wrap; margin-bottom: var(--sp-16); }
/* Footer wordmark = swappable background image (gradient / white / black per theme). */
.footer__word { display: block; width: clamp(132px, 18vw, 210px); aspect-ratio: 1164 / 300; height: auto; background: left center / contain no-repeat; background-image: url("../img/luuq-gradient.png"); }
.footer__cols { display: flex; gap: var(--sp-16); flex-wrap: wrap; }
.footer__col h4 { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--text-faint); margin-bottom: var(--sp-4); font-weight: var(--w-regular); }
.footer__col a { display: block; color: var(--text-muted); padding: .25rem 0; transition: color var(--dur-base); }
.footer__col a:hover { color: var(--text); }
.footer__bottom { display: flex; justify-content: space-between; gap: var(--sp-4); flex-wrap: wrap; padding-top: var(--sp-8); border-top: 1px solid var(--border); color: var(--text-faint); font-size: .85rem; }

/* ---------- Responsive ------------------------------------- */
@media (max-width: 900px) {
  .nav__links, .nav__actions { display: none; }
  .nav__toggle { display: block; }
  .contact__grid { grid-template-columns: 1fr; gap: var(--sp-12); }
  .cell--lg, .cell--md, .cell--sm, .cell--feature { grid-column: span 6; grid-row: auto; }
  .value { border-right: 0; }
}
@media (max-width: 560px) {
  .step { grid-template-columns: 1fr; gap: var(--sp-3); }
  .hero__meta { gap: var(--sp-6); }
  .btn { width: 100%; justify-content: center; }
  .hero__cta { flex-direction: column; }
}

/* Mobile menu overlay */
.mobile-menu { position: fixed; inset: 0; z-index: 60; background: rgba(8,8,10,.96); backdrop-filter: blur(20px);
  display: flex; flex-direction: column; justify-content: center; gap: var(--sp-6); padding: var(--gutter);
  transform: translateY(-100%); transition: transform var(--dur-slow) var(--ease-ios); }
.mobile-menu.is-open { transform: translateY(0); }
.mobile-menu a { font-family: var(--font-display); font-size: 2rem; }
.mobile-menu .close { position: absolute; top: 1.5rem; right: var(--gutter); font-family: var(--font-mono); font-size: .8rem; }

/* ---------- Brand wordmark (swappable per theme) ----------- */
.brand-wm { display: block; width: 74px; height: 19px; background: left center / contain no-repeat; background-image: url("../img/luuq-white.png"); }
.loader-wm { height: 34px; width: auto; opacity: .95; }

/* ---------- Hero aurora (animated glows) ------------------- */
.backdrop .glow--1 { animation: drift1 26s var(--ease-inout) infinite alternate; }
.backdrop .glow--2 { animation: drift2 32s var(--ease-inout) infinite alternate; }
@keyframes drift1 { from { transform: translateX(-52%) translateY(-10px); } to { transform: translateX(-44%) translateY(46px); } }
@keyframes drift2 { from { transform: translate(0,0) scale(1); } to { transform: translate(-46px,-34px) scale(1.08); } }

/* ---------- Collaborators (logo wall) --------------------- */
.logo-wall { display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: var(--r-lg); overflow: hidden; }
@media (max-width: 720px) { .logo-wall { grid-template-columns: repeat(2, 1fr); } }
.logo-tile { background: var(--bg); min-height: 128px; display: grid; place-items: center;
  font-family: var(--font-mono); font-size: .78rem; letter-spacing: .12em; color: var(--text-faint);
  transition: background var(--dur-base) var(--ease-out), color var(--dur-base) var(--ease-out); }
.logo-tile:hover { background: var(--surface-2); color: var(--text-muted); }

/* ---------- References (testimonials) --------------------- */
.quotes { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: clamp(1rem, 2vw, 1.5rem); }
.quote { border: 1px solid var(--border); border-radius: var(--r-lg); padding: var(--sp-8);
  background: var(--surface); display: flex; flex-direction: column; gap: var(--sp-8);
  transition: border-color var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out); }
.quote:hover { border-color: var(--border-strong); transform: translateY(-3px); }
.quote p { font-family: var(--font-display); font-size: var(--fs-h3); font-weight: var(--w-light);
  line-height: 1.36; letter-spacing: var(--track-snug); }
.quote figcaption { display: flex; align-items: center; gap: .8rem; color: var(--text-muted); font-size: .9rem; margin-top: auto; }
.quote .avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--gradient); flex: none; opacity: .85; }
.quote cite { font-style: normal; }
.quote cite b { display: block; color: var(--text); font-weight: var(--w-medium); }

/* ---------- Multi-page components ------------------------- */
.lang-switch { display: inline-flex; align-items: center; font-family: var(--font-mono); font-size: .72rem; letter-spacing: .05em; border: 1px solid var(--border); border-radius: var(--r-full); overflow: hidden; }
.lang-switch a { padding: .4rem .62rem; color: var(--text-faint); transition: color var(--dur-base) var(--ease-out), background var(--dur-base) var(--ease-out); }
.lang-switch a:hover { color: var(--text); }
.lang-switch a.is-active { color: var(--text); background: var(--surface-2); }
.nav__links a.is-active { color: var(--text); }
.nav__links a.is-active::after { width: 100%; }
@media (max-width: 1180px) { .nav__links { gap: var(--sp-4); } .nav { gap: var(--sp-4); } }

.page-hero { padding-top: clamp(6.5rem, 5rem + 4vw, 9rem); padding-bottom: var(--sp-2); }
.page-hero h1 { font-size: clamp(1.7rem, 1.3rem + 1.8vw, 2.8rem); line-height: 1.1; letter-spacing: var(--track-snug); max-width: 22ch; margin-top: .9rem; }
.page-hero .lead { font-size: var(--fs-lead); color: var(--text-muted); max-width: 58ch; font-weight: var(--w-light); margin-top: 1.25rem; }

.section-link { display: inline-flex; align-items: center; gap: .5rem; margin-top: var(--sp-12); font-family: var(--font-mono); font-size: .8rem; letter-spacing: .04em; color: var(--text-muted); transition: color var(--dur-base) var(--ease-out), gap var(--dur-base) var(--ease-out); }
.section-link:hover { color: var(--text); gap: .85rem; }

.cta-band { text-align: center; display: flex; flex-direction: column; align-items: center; gap: var(--sp-6); }
.cta-band h2 { font-size: var(--fs-h2); max-width: 20ch; letter-spacing: var(--track-snug); }
.cta-band .btn { margin-top: var(--sp-2); }

.contact__info { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-8) var(--sp-6); margin-top: var(--sp-16); padding-top: var(--sp-8); border-top: 1px solid var(--border); }
.contact__info .item { display: flex; flex-direction: column; gap: .3rem; }
.contact__info .k { font-family: var(--font-mono); font-size: .72rem; letter-spacing: var(--track-wide); text-transform: uppercase; color: var(--text-faint); }
.contact__info .v { color: var(--text); }
@media (max-width: 480px) { .contact__info { grid-template-columns: 1fr; } }

/* ============================================================
   THEME MODES — gradient (default) · mono (B/W dark) · light (W/B)
   Set via data-theme on <html>. Everything cascades from tokens.
   ============================================================ */
.loader { background: #08080a; } /* splash stays dark in every mode */

/* ---- Theme switcher (nav) ---- */
.theme-dock { display: inline-flex; align-items: center; gap: .35rem; }
.theme-dock button { width: 24px; height: 24px; border-radius: 50%; border: 1px solid var(--border-strong); padding: 0; cursor: pointer; transition: transform var(--dur-fast) var(--ease-out); }
.theme-dock button:hover { transform: scale(1.18); }
.theme-dock button.is-active { outline: 2px solid var(--accent); outline-offset: 2px; }
.theme-dock [data-theme-set="gradient"] { background: linear-gradient(135deg, #4f7cff, #8b5cf6, #8b5cf6); }
.theme-dock [data-theme-set="mono"] { background: linear-gradient(135deg, #f3f3f6 50%, #141418 50%); }
.theme-dock [data-theme-set="light"] { background: #f3f3f6; }

/* ---- MONO (siyah-beyaz): dark canvas, monochrome, no color ---- */
:root[data-theme="mono"] {
  --gradient: #f3f3f6;
  --c-blue: #f3f3f6; --c-indigo: #cfcfd6; --c-violet: #bdbdc6; --c-magenta: #f3f3f6;
  --accent: #f3f3f6; --accent-2: #cfcfd6; --ring: #f3f3f6;
}
:root[data-theme="mono"] .footer__word { background-image: url("../img/luuq-white.png"); }
:root[data-theme="mono"] .logo-mark path { stroke: #f3f3f6 !important; }
:root[data-theme="mono"] .backdrop .glow--1 { background: radial-gradient(circle at center, rgba(255,255,255,.10), transparent 60%); opacity: .5; }
:root[data-theme="mono"] .backdrop .glow--2 { background: radial-gradient(circle at center, rgba(255,255,255,.07), transparent 62%); opacity: .4; }
:root[data-theme="mono"] .avatar { background: #e6e6ea !important; }
:root[data-theme="mono"] .marquee__track span::after { color: #cfcfd6; }
:root[data-theme="mono"] .cell--feature { background: rgba(255,255,255,.04); }

/* ---- LIGHT (beyaz-siyah): light canvas, black ink, monochrome ---- */
:root[data-theme="light"] {
  color-scheme: light;
  --bg: #ffffff; --bg-elev-1: #f6f6f8; --bg-elev-2: #eeeef1;
  --surface: rgba(0,0,0,0.025); --surface-2: rgba(0,0,0,0.05);
  --text: #0a0a0c; --text-muted: #55555d; --text-faint: #6c6c75;
  --border: rgba(0,0,0,0.10); --border-strong: rgba(0,0,0,0.18);
  /* keep the brand blue→violet gradient + accents on white (premium, not flat) */
}
:root[data-theme="light"] .brand-wm { background-image: url("../img/luuq-gradient.png"); }
:root[data-theme="light"] .footer__word { background-image: url("../img/luuq-gradient.png"); }
:root[data-theme="light"] .backdrop { opacity: .85; }
:root[data-theme="light"] .backdrop .glow--1 { background: radial-gradient(circle at center, rgba(79,124,255,.18), rgba(139,92,246,.09) 46%, transparent 68%); }
:root[data-theme="light"] .backdrop .glow--2 { background: radial-gradient(circle at center, rgba(139,92,246,.15), transparent 62%); }
:root[data-theme="light"] .backdrop .grain { mix-blend-mode: multiply; opacity: .022; }
:root[data-theme="light"] .btn--primary { background: #0a0a0c; color: #fff; }
:root[data-theme="light"] .btn--primary:hover { background: #000; }
:root[data-theme="light"] .nav { background: rgba(255,255,255,.62); }
:root[data-theme="light"] .mobile-menu { background: rgba(255,255,255,.96); }
:root[data-theme="light"] ::selection { background: rgba(122,107,255,.20); color: #0a0a0c; }

/* ============================================================
   Inner-page components (research-driven)
   ============================================================ */
/* Duration badge + deliverable tags on Model steps */
.badge { display: inline-block; font-family: var(--font-mono); font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; color: var(--text-muted); border: 1px solid var(--border); border-radius: var(--r-full); padding: .25rem .65rem; margin-bottom: .7rem; }
.step__body ul { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .95rem; }
.step__body ul li { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .03em; color: var(--text-muted); border: 1px solid var(--border); border-radius: var(--r-full); padding: .25rem .6rem; }

/* "You'll never build alone" discipline pillar grid */
.pillars { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: var(--r-lg); overflow: hidden; }
.pillar { background: var(--bg); padding: var(--sp-8); display: flex; flex-direction: column; gap: .5rem; transition: background var(--dur-base) var(--ease-out); }
.pillar:hover { background: var(--surface-2); }
.pillar .n { font-family: var(--font-mono); font-size: .72rem; color: var(--text-faint); letter-spacing: .1em; }
.pillar h3 { font-size: 1.12rem; }
.pillar p { color: var(--text-muted); font-size: .9rem; font-weight: var(--w-light); }

/* Contact: split + trust panel + inquiry select */
.contact-split { display: grid; grid-template-columns: 1fr .9fr; gap: var(--sp-24); align-items: start; }
.trust-panel { display: flex; flex-direction: column; gap: var(--sp-8); }
.trust-panel .promise { font-family: var(--font-mono); font-size: .8rem; color: var(--text-muted); display: flex; align-items: center; gap: .6rem; }
.trust-panel .promise .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--gradient); flex: none; }
/* Native <select> — the no-JS fallback (JS upgrades it to .lq-select below).
   Own chevron + dark option list so the native popup isn't unreadable. */
.field select { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-md); padding: .9rem 2.6rem .9rem 1rem; color: var(--text); appearance: none; cursor: pointer; width: 100%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%239b9ba7' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 1rem center; background-size: 1.1em; }
.field select:focus { border-color: var(--border-strong); outline: none; }
.field select option { background: var(--bg-elev-2); color: var(--text); }

/* ---------- Custom themed dropdown (progressive enhancement) ---------- */
.lq-select { position: relative; }
.lq-select .lq-select__native { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); border: 0; opacity: 0; pointer-events: none; }
.lq-select__btn { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-md); padding: .9rem 1rem;
  color: var(--text); font: inherit; font-size: .95rem; text-align: left; cursor: pointer;
  transition: border-color var(--dur-base) var(--ease-out), background var(--dur-base) var(--ease-out); }
.lq-select__btn:hover { border-color: var(--border-strong); background: var(--surface-2); }
.lq-select__btn:focus-visible,
.lq-select.is-open .lq-select__btn { outline: none; border-color: var(--border-strong); box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 32%, transparent); }
.lq-select__value { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lq-select__chev { flex: none; width: 1.05em; height: 1.05em; color: var(--text-muted); transition: transform var(--dur-base) var(--ease-out); }
.lq-select.is-open .lq-select__chev { transform: rotate(180deg); }

.lq-select__panel { position: absolute; top: calc(100% + .5rem); left: 0; right: 0; z-index: 40;
  margin: 0; padding: .4rem; list-style: none; max-height: 17rem; overflow-y: auto;
  background: var(--bg-elev-2); border: 1px solid var(--border-strong); border-radius: var(--r-md);
  box-shadow: var(--shadow-2); animation: lq-pop .18s var(--ease-out); }
.lq-select__panel[hidden] { display: none; }
@keyframes lq-pop { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .lq-select__panel { animation: none; } }
.lq-select__opt { display: flex; align-items: center; justify-content: space-between; gap: .75rem;
  padding: .7rem .85rem; border-radius: var(--r-sm); color: var(--text-muted); cursor: pointer; font-size: .95rem;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out); }
.lq-select__opt:hover, .lq-select__opt.is-active { background: var(--surface-2); color: var(--text); }
.lq-select__opt[aria-selected="true"] { color: var(--text); }
.lq-select__opt[aria-selected="true"]::after { content: "✓"; color: var(--accent); font-size: .85em; }

/* ---------- Contact form status banner ---------- */
.form-note { display: flex; align-items: flex-start; gap: .6rem; padding: .9rem 1.1rem; border-radius: var(--r-md);
  border: 1px solid var(--border); font-size: .92rem; line-height: 1.5; }
.form-note__i { flex: none; font-family: var(--font-mono); font-weight: var(--w-bold); line-height: 1.5; }
.form-note--ok { background: color-mix(in srgb, #3ecf8e 12%, transparent); border-color: color-mix(in srgb, #3ecf8e 42%, transparent); color: #7ee7bb; }
.form-note--err { background: color-mix(in srgb, #ff5a5a 10%, transparent); border-color: color-mix(in srgb, #ff5a5a 36%, transparent); color: #ff9a9a; }
:root[data-theme="light"] .form-note--ok { color: #14875a; }
:root[data-theme="light"] .form-note--err { color: #c0392b; }

/* Honeypot — visually gone, off-screen, never focusable by tabbing. */
.hp-field { position: absolute !important; left: -9999px !important; top: auto; width: 1px; height: 1px; overflow: hidden; }

@media (max-width: 900px) { .contact-split { grid-template-columns: 1fr; gap: var(--sp-12); } }
:root[data-theme="light"] .cell--feature { background: linear-gradient(135deg, rgba(79,124,255,.09), rgba(139,92,246,.06)); }

/* Theme dock — floating bottom-right (declutters the nav) */
.theme-dock { position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 80; display: inline-flex; align-items: center; gap: .45rem; padding: .5rem .6rem; border-radius: var(--r-full); border: 1px solid var(--border); background: rgba(12,12,16,.6); backdrop-filter: blur(16px) saturate(140%); -webkit-backdrop-filter: blur(16px) saturate(140%); box-shadow: var(--shadow-2); }
:root[data-theme="light"] .theme-dock { background: rgba(255,255,255,.72); }
.theme-dock [data-theme-set="gradient"] { background: linear-gradient(135deg, #4f7cff, #8b5cf6); }
@media (max-width: 560px) { .theme-dock { right: 1rem; bottom: 1rem; } }

/* ============================================================
   ROADMAP — the Model journey (clean single-rail timeline)
   ============================================================ */
.roadmap { position: relative; display: flex; flex-direction: column; gap: clamp(1rem, 2.2vw, 1.75rem); padding-block: var(--sp-6); }
.roadmap__spine { position: absolute; left: 27px; top: 16px; bottom: 16px; width: 2px; background: var(--border-strong); overflow: hidden; border-radius: 2px; }
.roadmap__spine i { position: absolute; left: 0; right: 0; top: 0; height: 0; background: linear-gradient(var(--c-blue), var(--c-violet)); box-shadow: 0 0 18px 1px var(--c-indigo); transition: height .1s linear; }
.rstep { position: relative; display: grid; grid-template-columns: 56px 1fr; align-items: start; gap: clamp(1rem, 2vw, 1.6rem); }
.rnode { grid-column: 1; width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center; background: var(--bg-elev-1); border: 1px solid var(--border-strong); position: relative; z-index: 2; box-shadow: 0 0 0 6px var(--bg); transition: box-shadow var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out); }
.rnode b { font-family: var(--font-mono); font-size: .95rem; font-weight: var(--w-medium); }
.rstep:hover .rnode { box-shadow: 0 0 0 6px var(--bg), 0 0 30px -6px var(--c-indigo); transform: scale(1.05); }
.rcard { grid-column: 2; border: 1px solid var(--border); border-radius: var(--r-lg); background: linear-gradient(180deg, var(--surface-2), var(--surface)); padding: clamp(1.25rem, 2.4vw, 1.9rem); transition: transform var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out); }
.rcard h3 { font-size: var(--fs-h3); margin: .3rem 0 .5rem; }
.rcard p { color: var(--text-muted); font-weight: var(--w-light); }
.rcard ul { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .9rem; justify-content: flex-start; }
.rcard ul li { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .03em; color: var(--text-muted); border: 1px solid var(--border); border-radius: var(--r-full); padding: .25rem .6rem; }
.rcard:hover { border-color: var(--border-strong); box-shadow: var(--shadow-2); transform: translateY(-3px); }
@media (max-width: 560px) {
  .roadmap__spine { left: 22px; }
  .rstep { grid-template-columns: 44px 1fr; gap: var(--sp-3); }
  .rnode { width: 44px; height: 44px; }
}

/* ============================================================
   ECOSYSTEM — division directory (clean grid; replaces orbit map)
   ============================================================ */
.eco-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: var(--r-lg); overflow: hidden; }
.eco-item { background: var(--bg); padding: clamp(1.4rem, 2.4vw, 2.1rem); display: flex; flex-direction: column; gap: .5rem; position: relative; transition: background var(--dur-base) var(--ease-out); }
.eco-item::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 2px; background: var(--gradient); transform: scaleX(0); transform-origin: left; transition: transform var(--dur-base) var(--ease-out); }
.eco-item:hover { background: var(--surface-2); }
.eco-item:hover::before { transform: scaleX(1); }
.eco-item__top { display: flex; align-items: center; justify-content: space-between; margin-bottom: .35rem; }
.eco-item__idx { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .14em; color: var(--text-faint); }
.eco-item__dot { width: 7px; height: 7px; border-radius: 50%; background: var(--gradient); opacity: .6; }
.eco-item h3 { font-size: var(--fs-h3); }
.eco-item p { color: var(--text-muted); font-size: .95rem; font-weight: var(--w-light); line-height: 1.55; }
.eco-item__tags { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: auto; padding-top: .85rem; }
.eco-item__tags li { font-family: var(--font-mono); font-size: .67rem; letter-spacing: .02em; color: var(--text-muted); border: 1px solid var(--border); border-radius: var(--r-full); padding: .2rem .55rem; }
.eco-item--feature { background: linear-gradient(150deg, rgba(79,124,255,.12), rgba(139,92,246,.07)); }
.eco-item--feature::before { display: none; }
.eco-item--feature h3 { background: var(--gradient); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.eco-item--feature .eco-item__idx { color: var(--c-indigo); }

/* Mobile menu language switch — clear, spaced (fixes cramped "ENDETR") */
.mobile-lang { margin-top: 1.75rem; }
.mobile-menu .lang-switch { font-size: .85rem; }
.mobile-menu .lang-switch a { padding: .55rem .95rem; }

/* ============================================================
   404 — colossal outlined numeral + real recovery paths
   The stroked "404" is the backdrop; a gradient copy of it is
   revealed through a spotlight mask that follows the pointer.
   With no JS / reduced motion the spotlight rests centred, so
   it still reads as a deliberate composition.
   ============================================================ */
.nf { position: relative; min-height: 100svh; display: flex; align-items: center;
  padding-top: clamp(7rem, 6rem + 4vw, 10rem); padding-bottom: var(--sp-16); overflow: hidden; }

.nf__glyph { position: absolute; inset: 0; z-index: var(--z-bg); display: grid; place-items: center;
  pointer-events: none; user-select: none; -webkit-user-select: none; }
.nf__glyph b {
  position: relative;
  font-family: var(--font-display); font-weight: var(--w-bold);
  font-size: clamp(10rem, 38vw, 32rem); line-height: .78; letter-spacing: -0.055em;
  color: transparent; -webkit-text-stroke: 1.5px var(--border-strong);
  transform: translate3d(var(--nf-x, 0px), var(--nf-y, 0px), 0);
  transition: transform .55s var(--ease-out);
  /* fade the numeral out at its edges so it sits behind the copy, not on top of it */
  -webkit-mask-image: radial-gradient(72% 64% at 50% 50%, #000 34%, transparent 82%);
  mask-image: radial-gradient(72% 64% at 50% 50%, #000 34%, transparent 82%);
}
.nf__glyph b::after {
  content: "404"; position: absolute; inset: 0;
  -webkit-text-stroke: 0;
  background: var(--gradient); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
  -webkit-mask-image: radial-gradient(circle 24vmin at var(--nf-mx, 50%) var(--nf-my, 50%), #000 0%, transparent 68%);
  mask-image: radial-gradient(circle 24vmin at var(--nf-mx, 50%) var(--nf-my, 50%), #000 0%, transparent 68%);
}
.nf__inner { position: relative; z-index: var(--z-content); }
.nf__inner h1 { font-size: var(--fs-display); line-height: var(--lh-tight); letter-spacing: var(--track-tight); max-width: 16ch; margin-top: .9rem; }
.nf__inner .lead { font-size: var(--fs-lead); color: var(--text-muted); max-width: 52ch; font-weight: var(--w-light); margin-top: 1.25rem; }

/* The path that failed — mono, pill, truncates instead of wrapping. */
.nf__path { display: inline-flex; align-items: center; gap: .7rem; margin-top: var(--sp-6); max-width: 100%;
  padding: .5rem .95rem; border: 1px solid var(--border); border-radius: var(--r-full); background: var(--surface); }
.nf__path .k { flex: none; font-family: var(--font-mono); font-size: .67rem; letter-spacing: var(--track-wide);
  text-transform: uppercase; color: var(--text-faint); }
.nf__path code { font-family: var(--font-mono); font-size: .85rem; color: var(--text-muted);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.nf__search { display: flex; gap: .6rem; margin-top: var(--sp-8); max-width: 34rem; }
.nf__search input { flex: 1; min-width: 0; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-full); padding: .95rem 1.25rem; color: var(--text);
  transition: border-color var(--dur-base) var(--ease-out), background var(--dur-base) var(--ease-out); }
.nf__search input::placeholder { color: var(--text-faint); }
.nf__search input:focus { outline: none; border-color: var(--border-strong); background: var(--surface-2); }
.nf__search input::-webkit-search-cancel-button { filter: invert(.6); }
.nf__search .btn { flex: none; }

.nf__cta { display: flex; gap: var(--sp-4); flex-wrap: wrap; margin-top: var(--sp-6); }

@media (max-width: 560px) {
  /* .btn goes full-width below 560px — stack the search so the field keeps its own row */
  .nf__search { flex-direction: column; }
  .nf__search input { width: 100%; }
}