/* stackbeyond.com — bright brand field, cubes behind, bold type over it. */
:root {
  --field: #4a90d0;      /* logo field blue */
  --field-2: #3a7fc0;
  --cyan: #3fd0ff;       /* light cube faces */
  --navy: #142a4a;       /* mid cube faces */
  --ink: #0e1a33;        /* dark faces / text */
  --cream: #f5ecd7;      /* wordmark plate */
  --paper: #fbf8f1;
  --mute: #56657f;
  --hair: rgba(14,26,51,.14);
  --sans: "Sora", "Inter Tight", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
  --w: 1160px;
  --pad: clamp(18px, 4vw, 48px);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; font-family: var(--sans); color: var(--ink); background: var(--field); font-size: 17px; line-height: 1.55; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
p { margin: 0 0 1em; }
h1, h2, h3 { margin: 0; line-height: 1.05; letter-spacing: -0.025em; }
::selection { background: var(--cyan); color: var(--ink); }
.wrap { max-width: var(--w); margin: 0 auto; padding: 0 var(--pad); }
.k { display: inline-block; font-family: var(--mono); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; opacity: .75; margin-bottom: 14px; }

.field { position: fixed; inset: 0; z-index: 0; background: var(--ink); opacity: 0; pointer-events: none; transition: opacity .25s; }
#scene { position: fixed; inset: 0; width: 100%; height: 100%; display: block; z-index: 0; }
.noise { position: fixed; inset: 0; z-index: 1; pointer-events: none; opacity: .5; mix-blend-mode: soft-light;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.6'/%3E%3C/svg%3E"); }
main, .top, .foot { position: relative; z-index: 2; }

/* top bar */
.top { position: fixed; top: 0; left: 0; right: 0; z-index: 5; display: flex; align-items: center; justify-content: space-between; padding: 16px var(--pad); color: var(--cream); transition: background .3s, color .3s, box-shadow .3s; }
.top.is-solid { background: rgba(251,248,241,.9); backdrop-filter: blur(10px); color: var(--ink); box-shadow: 0 1px 0 var(--hair); }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: .06em; font-size: 15px; }
.brand__mark { width: 30px; height: 30px; }
.top__nav { display: flex; align-items: center; gap: 22px; font-size: 14.5px; font-weight: 500; }
.top__nav a:not(.top__cta) { opacity: .85; border-bottom: 1.5px solid transparent; padding-bottom: 2px; }
.top__nav a:not(.top__cta):hover { opacity: 1; border-color: currentColor; }
.top__cta { background: var(--cream); color: var(--ink); padding: 9px 14px; border-radius: 999px; font-weight: 600; font-size: 13.5px; transition: transform .15s; }
.top__cta:hover { transform: translateY(-1px); }
.top.is-solid .top__cta { background: var(--ink); color: var(--cream); }
.top.is-dark { background: rgba(14,26,51,.6); backdrop-filter: blur(10px); color: var(--cream); box-shadow: 0 1px 0 rgba(245,236,215,.12); }

/* hero + contact copy sit over the 3D canvas: let the pointer reach the cubes through the text
   (links and buttons stay interactive), and don't let a cube-drag turn into a text selection */
.hero__inner, .hero__hint, .contact { pointer-events: none; user-select: none; -webkit-user-select: none; }
.hero__inner a, .contact a { pointer-events: auto; }
.contact a { user-select: text; -webkit-user-select: text; }

/* hero */
.hero { min-height: 100svh; display: grid; align-items: center; padding: 120px var(--pad) 90px; color: var(--cream); position: relative; }
.hero__inner { max-width: 760px; }
.hero__eyebrow { display: flex; gap: 18px; flex-wrap: wrap; font-family: var(--mono); font-size: 12.5px; letter-spacing: .1em; text-transform: uppercase; opacity: .85; margin-bottom: 26px; }
.hero__eyebrow span + span::before { content: "/"; margin-right: 18px; opacity: .5; }
.hero__title { display: flex; flex-direction: column; gap: 22px; align-items: flex-start; }
.plate { display: inline-block; background: var(--cream); color: var(--ink); font-weight: 800; letter-spacing: .08em; font-size: clamp(14px, 1.7vw, 20px); padding: 8px 22px; clip-path: polygon(10px 0, calc(100% - 10px) 0, 100% 50%, calc(100% - 10px) 100%, 10px 100%, 0 50%); }
.hero__line { font-size: clamp(52px, 9.4vw, 124px); font-weight: 800; line-height: .92; letter-spacing: -0.045em; text-shadow: 0 2px 0 rgba(14,26,51,.18); }
.hero__sub { margin: 30px 0 32px; font-size: clamp(17px, 1.7vw, 21px); line-height: 1.45; max-width: 34em; opacity: .95; }
.hero__cta { display: flex; gap: 12px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; padding: 14px 22px; border-radius: 999px; font-weight: 600; font-size: 15px; transition: transform .15s, background .2s, color .2s; border: 1.5px solid transparent; }
.btn:hover { transform: translateY(-2px); }
.btn--ink { background: var(--ink); color: var(--cream); }
.btn--ink:hover { background: #000; }
.btn--line { border-color: rgba(245,236,215,.7); color: var(--cream); }
.btn--line:hover { background: rgba(245,236,215,.12); }
.hero__hint { position: absolute; left: var(--pad); bottom: 28px; display: flex; align-items: center; gap: 10px; font-family: var(--mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; opacity: .7; }
.hero__fallback { display: none; position: absolute; right: var(--pad); top: 50%; transform: translateY(-50%) rotate(-4deg); width: min(38vw, 340px); height: auto; border-radius: 28px; box-shadow: 0 40px 80px -30px rgba(14,26,51,.6); }
.hero__fallback.is-on { display: block; }
.hero__hint-drag { opacity: .8; }
@media (pointer: coarse) { .hero__hint-drag { display: none; } }
.hero__hint i { width: 40px; height: 1px; background: currentColor; position: relative; overflow: hidden; }
.hero__hint i::after { content: ""; position: absolute; inset: 0; background: var(--cyan); transform: translateX(-100%); animation: slide 1.8s infinite; }
@keyframes slide { to { transform: translateX(100%); } }

/* marquee */
.marquee { overflow: hidden; border-top: 1px solid rgba(245,236,215,.35); border-bottom: 1px solid rgba(245,236,215,.35); color: var(--cream); background: rgba(14,26,51,.18); backdrop-filter: blur(4px); }
.marquee__track { display: flex; gap: 0; width: max-content; animation: marquee 34s linear infinite; }
.marquee span { padding: 12px 28px; font-family: var(--mono); font-size: 12.5px; letter-spacing: .12em; text-transform: uppercase; white-space: nowrap; }
.marquee span::after { content: "◆"; margin-left: 28px; color: var(--cyan); font-size: 9px; vertical-align: 2px; }
@keyframes marquee { to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .marquee__track { animation: none; } }

/* bands */
.band { padding: clamp(64px, 10vh, 120px) 0; }
.band--cream { background: var(--cream); }
.band--paper { background: var(--paper); }
.band--blue { background: linear-gradient(180deg, var(--field-2), #2f6aa8); color: var(--cream); }
.band--ink { background: transparent; color: var(--cream); min-height: 100svh; display: flex; align-items: center; }
.band__head { max-width: 640px; margin-bottom: clamp(32px, 5vh, 56px); }
.band__head h2 { font-size: clamp(34px, 4.6vw, 58px); font-weight: 800; letter-spacing: -0.04em; margin-bottom: 16px; }
.band__head p { font-size: 18px; color: var(--mute); }
.band__head--light p { color: rgba(245,236,215,.85); }

.cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.card { background: var(--paper); border: 1px solid var(--hair); border-radius: 14px; padding: 26px 26px 24px; position: relative; overflow: hidden; transition: transform .25s, box-shadow .25s; }
.card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, var(--cyan), var(--field)); transform: scaleX(0); transform-origin: left; transition: transform .35s; }
.card:hover { transform: translateY(-3px); box-shadow: 0 18px 40px -22px rgba(14,26,51,.35); }
.card:hover::before { transform: scaleX(1); }
.card__n { position: absolute; top: 18px; right: 22px; font-family: var(--mono); font-size: 12px; color: var(--mute); }
.card h3 { font-size: 22px; margin-bottom: 10px; }
.card p { margin: 0; color: var(--mute); font-size: 15.5px; }

.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: rgba(245,236,215,.25); border: 1px solid rgba(245,236,215,.25); border-radius: 14px; overflow: hidden; }
.steps li { background: rgba(14,26,51,.22); padding: 26px 22px 28px; backdrop-filter: blur(6px); }
.steps__n { font-family: var(--mono); font-size: 12px; color: var(--cyan); }
.steps h3 { font-size: 24px; margin: 12px 0 10px; }
.steps p { margin: 0; font-size: 15px; opacity: .88; }

.studio { display: grid; grid-template-columns: 1fr 260px; gap: 48px; align-items: center; }
.studio h2 { font-size: clamp(30px, 4vw, 48px); font-weight: 800; letter-spacing: -0.04em; margin-bottom: 18px; }
.studio p { color: #2c3a55; font-size: 17px; max-width: 60ch; }
.studio a { border-bottom: 1.5px solid var(--field); }
.studio__logo img { width: 100%; height: auto; border-radius: 22px; box-shadow: 0 30px 60px -30px rgba(14,26,51,.5); transform: rotate(-3deg); transition: transform .4s; }
.studio__logo img:hover { transform: rotate(0deg) scale(1.02); }

.contact { text-align: left; width: 100%; display: flex; flex-direction: column; align-items: flex-end; }
.contact > * { width: min(100%, 560px); }
.contact h2, .contact p { max-width: 620px; }
.contact .k { color: var(--cyan); opacity: .9; }
.contact h2 { font-size: clamp(40px, 6.4vw, 84px); font-weight: 800; letter-spacing: -0.05em; }
.contact p { opacity: .8; margin: 16px 0 28px; }
.contact__mail { display: inline-block; font-size: clamp(18px, 2.6vw, 30px); font-weight: 600; letter-spacing: -0.02em; border-bottom: 2px solid var(--cyan); padding-bottom: 4px; transition: color .2s; }
.contact__mail:hover { color: var(--cyan); }

.foot { background: transparent; color: rgba(245,236,215,.7); font-family: var(--mono); font-size: 12px; }
.foot__row { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px 20px; padding: 18px var(--pad) 28px; border-top: 1px solid rgba(245,236,215,.12); }
.foot a:hover { color: var(--cyan); }

/* reveal */
.band .wrap > * { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.band.is-in .wrap > * { opacity: 1; transform: none; }
.band.is-in .wrap > *:nth-child(2) { transition-delay: .08s; }
.band.is-in .wrap > *:nth-child(3) { transition-delay: .16s; }
@media (prefers-reduced-motion: reduce) { .band .wrap > * { opacity: 1; transform: none; transition: none; } }

@media (max-width: 900px) {
  .top__nav a:not(.top__cta) { display: none; }
  .cards, .steps { grid-template-columns: 1fr 1fr; }
  .steps { border-radius: 10px; }
  .studio { grid-template-columns: 1fr; }
  .studio__logo { max-width: 200px; }
}
@media (max-width: 560px) {
  .cards, .steps { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .band--ink { align-items: end; padding-top: 46svh; }
  .contact { align-items: flex-start; }
  /* cubes live in the upper third; copy sits below them */
  .hero { align-items: end; padding-top: 44svh; padding-bottom: 72px; }
  .hero__inner { background: linear-gradient(180deg, rgba(74,144,208,0) 0%, rgba(74,144,208,.85) 18%, rgba(74,144,208,.85) 100%); margin: 0 calc(-1 * var(--pad)); padding: 28px var(--pad) 0; }
  .hero__line { font-size: clamp(44px, 13vw, 72px); }
  .hero__sub { font-size: 16px; margin: 20px 0 24px; }
}