/* ============================================================
   AKP DESIGN — Studio site design system
   Iridescent holographic foil · crop-mark print motif · charcoal
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Hanken+Grotesk:wght@400;500;600;700&family=Space+Mono:wght@400;700&display=swap');

:root{
  /* charcoal stack (pulled toward the logo background ~#2e2e2e, deepened) */
  --bg:        #111113;
  --bg-1:      #161618;
  --panel:     #1b1b1e;
  --panel-2:   #212125;
  --line:      rgba(255,255,255,.10);
  --line-2:    rgba(255,255,255,.06);

  --ink:       #f3f3f5;
  --ink-2:     #c2c2c8;
  --muted:     #87878f;
  --faint:     #5a5a62;

  /* iridescent foil — sampled from the AP monogram */
  --holo: linear-gradient(100deg,
            #8df5b4 0%, #5ce6e0 22%, #5b8dff 44%,
            #9b7dff 64%, #ff7ed4 82%, #ffe27a 100%);
  --holo-soft: linear-gradient(100deg,
            rgba(141,245,180,.85), rgba(92,230,224,.85),
            rgba(91,141,255,.85), rgba(155,125,255,.85),
            rgba(255,126,212,.85), rgba(255,226,122,.85));
  --accent: #5ce6e0;          /* cyan — focus / links / hints */
  --accent-ink: #0c1414;

  --maxw: 1280px;
  --gut: clamp(20px, 5vw, 64px);

  --r-s: 6px;
  --r-m: 12px;
  --r-l: 20px;

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

  --holo-intensity: 1;        /* tweakable */
  --accent-hue: 0deg;         /* tweakable hue-rotate on foil */

  --ff-display:'Space Grotesk', system-ui, sans-serif;
  --ff-body:'Hanken Grotesk', system-ui, sans-serif;
  --ff-mono:'Space Mono', ui-monospace, monospace;
}

/* light mode */
:root[data-theme="light"]{
  --bg:#ecebe8; --bg-1:#f4f3f0; --panel:#ffffff; --panel-2:#f7f6f3;
  --line:rgba(20,20,22,.14); --line-2:rgba(20,20,22,.07);
  --ink:#16161a; --ink-2:#3a3a42; --muted:#646469; --faint:#a6a6ad;
  /* bright cyan is invisible on cream — use a darker teal for accent text,
     and white ink on accent fills (chips, selected opts, ::selection) */
  --accent:#0c7a74; --accent-ink:#ffffff;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:var(--ff-body); font-size:17px; line-height:1.6;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
::selection{background:var(--accent); color:var(--accent-ink)}
a{color:inherit; text-decoration:none}
img{display:block; max-width:100%}
button{font-family:inherit}

/* pointer-follow holographic ambient glow */
.aura{position:fixed; inset:0; pointer-events:none; z-index:0;
  background:radial-gradient(420px 420px at var(--mx,50%) var(--my,18%),
     rgba(124,180,255,.10), transparent 70%);
  opacity:calc(.9 * var(--holo-intensity)); transition:background .12s linear;}
:root[data-theme="light"] .aura{background:radial-gradient(420px 420px at var(--mx,50%) var(--my,18%),rgba(91,141,255,.10),transparent 70%)}

/* ---------- layout ---------- */
.wrap{max-width:var(--maxw); margin:0 auto; padding-inline:var(--gut); position:relative; z-index:1}
section{position:relative}
.sec{padding-block:clamp(64px,9vw,140px)}
.sec-sm{padding-block:clamp(48px,6vw,90px)}

/* ---------- type ---------- */
.display{font-family:var(--ff-display); font-weight:500; letter-spacing:-.02em; line-height:.98; margin:0}
h1.display{font-size:clamp(44px, 8.4vw, 118px)}
h2.display{font-size:clamp(34px, 5.2vw, 76px)}
h3.display{font-size:clamp(24px, 3vw, 40px); line-height:1.04}
p{margin:0 0 1em; text-wrap:pretty}
.lead{font-size:clamp(18px,2.1vw,24px); line-height:1.5; color:var(--ink-2); font-weight:400}
.muted{color:var(--muted)}
.big-num{font-family:var(--ff-display); font-weight:600; letter-spacing:-.02em}

/* mono eyebrow with registration squares */
.eyebrow{font-family:var(--ff-mono); font-size:12.5px; letter-spacing:.22em;
  text-transform:uppercase; color:var(--muted); display:inline-flex; align-items:center; gap:12px}
.eyebrow::before{content:""; width:7px; height:7px; background:var(--ink);
  box-shadow:0 0 0 1px var(--bg), 0 0 0 2px var(--ink); transform:rotate(0deg)}
.eyebrow.solo::before{display:none}
.tick{display:inline-block; width:7px; height:7px; background:currentColor; vertical-align:middle}

/* holographic foil text */
.holo-text{
  background:var(--holo); background-size:200% 100%;
  -webkit-background-clip:text; background-clip:text; color:transparent;
  filter:hue-rotate(var(--accent-hue)) saturate(calc(.9 + .4*var(--holo-intensity)));
  animation:holoShift 9s linear infinite;
}
/* anchor foil text on the light background so pale stops (yellow/green) stay legible */
:root[data-theme="light"] .holo-text{filter:hue-rotate(var(--accent-hue)) saturate(1.35) brightness(.74)}
@keyframes holoShift{to{background-position:200% 0}}
.holo-line{height:2px; border:0; background:var(--holo); background-size:200% 100%;
  filter:hue-rotate(var(--accent-hue)); animation:holoShift 9s linear infinite}

/* ---------- crop-mark frame (the registration motif) ---------- */
.crop{position:relative}
.crop::before, .crop::after{
  content:""; position:absolute; width:18px; height:18px; pointer-events:none;
  border-color:var(--line); border-style:solid; border-width:0;
}
.crop::before{top:-1px; left:-1px; border-top-width:1px; border-left-width:1px}
.crop::after{bottom:-1px; right:-1px; border-bottom-width:1px; border-right-width:1px}
/* full 4-corner version */
.crop4{position:relative}
.crop4 .ci{position:absolute; width:16px; height:16px; pointer-events:none; z-index:3}
.crop4 .ci::before, .crop4 .ci::after{content:""; position:absolute; background:var(--holo);
  background-size:300% 100%; filter:hue-rotate(var(--accent-hue)); opacity:.9}
.crop4 .ci::before{width:16px; height:1.5px}
.crop4 .ci::after{width:1.5px; height:16px}
.crop4 .tl{top:-1px; left:-1px}
.crop4 .tr{top:-1px; right:-1px} .crop4 .tr::before{right:0} .crop4 .tr::after{right:0}
.crop4 .bl{bottom:-1px; left:-1px} .crop4 .bl::before{bottom:0} .crop4 .bl::after{bottom:0}
.crop4 .br{bottom:-1px; right:-1px} .crop4 .br::before{bottom:0; right:0} .crop4 .br::after{bottom:0; right:0}

/* ---------- buttons ---------- */
.btn{display:inline-flex; align-items:center; gap:.6em; padding:14px 22px; border-radius:100px; white-space:nowrap;
  font-family:var(--ff-mono); font-size:13px; letter-spacing:.12em; text-transform:uppercase;
  border:1px solid var(--line); color:var(--ink); background:transparent; cursor:pointer;
  transition:border-color .3s var(--ease), color .3s, background .3s, transform .25s var(--ease)}
.btn:hover{border-color:transparent; transform:translateY(-2px)}
.btn .arr{transition:transform .3s var(--ease)}
.btn:hover .arr{transform:translate(4px,-4px)}
.btn-holo{position:relative; border-color:transparent; color:var(--bg); background:var(--ink); overflow:hidden}
.btn-holo span{position:relative; z-index:2}
.btn-holo::before{content:""; position:absolute; inset:0; background:var(--holo); background-size:200% 100%;
  filter:hue-rotate(var(--accent-hue)); animation:holoShift 6s linear infinite; opacity:0; transition:opacity .3s}
.btn-holo:hover::before{opacity:1}
.btn-holo:hover{color:#0c0c0e}
.btn-ghost:hover{border-color:var(--accent); color:var(--accent)}
.link-u{position:relative; font-family:var(--ff-mono); font-size:13px; letter-spacing:.1em; text-transform:uppercase}
.link-u::after{content:""; position:absolute; left:0; bottom:-4px; height:1px; width:100%;
  background:var(--holo); background-size:200% 100%; filter:hue-rotate(var(--accent-hue));
  transform:scaleX(0); transform-origin:left; transition:transform .35s var(--ease)}
.link-u:hover::after{transform:scaleX(1)}

/* ---------- nav ---------- */
.nav{position:sticky; top:0; z-index:50; backdrop-filter:blur(14px);
  background:color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom:1px solid var(--line-2)}
.nav-in{display:flex; align-items:center; justify-content:space-between; gap:24px;
  height:72px; max-width:var(--maxw); margin:0 auto; padding-inline:var(--gut)}
.brand{display:flex; align-items:center; gap:11px; font-family:var(--ff-display); font-weight:600;
  letter-spacing:.02em; font-size:18px}
.brand .mono-tag{font-family:var(--ff-mono); font-size:10px; letter-spacing:.18em; color:var(--muted);
  border:1px solid var(--line); padding:3px 6px; border-radius:4px; text-transform:uppercase}
.logo-mark{width:30px; height:30px; flex:none; display:block; object-fit:contain;
  filter:hue-rotate(var(--accent-hue)) drop-shadow(0 0 12px rgba(124,180,255,calc(.4*var(--holo-intensity))))}
.nav-links{display:flex; align-items:center; gap:30px; font-family:var(--ff-mono); font-size:13px;
  letter-spacing:.06em; text-transform:uppercase}
.nav-links a{color:var(--ink-2); position:relative; padding:6px 0; transition:color .25s}
.nav-links a .idx{color:var(--faint); font-size:10px; margin-right:5px}
.nav-links a:hover, .nav-links a.active{color:var(--ink)}
.nav-links a::after{content:""; position:absolute; left:0; right:0; bottom:-2px; height:1.5px;
  background:var(--holo); background-size:200% 100%; filter:hue-rotate(var(--accent-hue));
  transform:scaleX(0); transform-origin:left; transition:transform .3s var(--ease)}
.nav-links a:hover::after, .nav-links a.active::after{transform:scaleX(1)}
.nav-right{display:flex; align-items:center; gap:16px}
.burger{display:none; width:42px; height:42px; border:1px solid var(--line); border-radius:8px;
  background:transparent; cursor:pointer; flex-direction:column; gap:5px; align-items:center; justify-content:center}
.burger i{width:18px; height:1.5px; background:var(--ink); transition:.3s var(--ease)}
.burger.open i:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.burger.open i:nth-child(2){opacity:0}
.burger.open i:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

.mobile-menu{position:fixed; inset:72px 0 0; z-index:49; background:var(--bg);
  transform:translateY(-12px); opacity:0; pointer-events:none; transition:.3s var(--ease);
  display:flex; flex-direction:column; padding:32px var(--gut); gap:6px}
.mobile-menu.open{opacity:1; transform:none; pointer-events:auto}
.mobile-menu a{font-family:var(--ff-display); font-size:34px; padding:14px 0; border-bottom:1px solid var(--line-2);
  display:flex; align-items:baseline; gap:14px}
.mobile-menu a .idx{font-family:var(--ff-mono); font-size:13px; color:var(--muted)}

/* ---------- hero ---------- */
.hero{padding-top:clamp(40px,6vw,84px); padding-bottom:clamp(40px,5vw,72px)}
.hero h1{margin:.18em 0 .32em}
.hero-meta{display:flex; flex-wrap:wrap; gap:28px 44px; margin-top:40px;
  padding-top:26px; border-top:1px solid var(--line)}
.hero-meta .cell .k{font-family:var(--ff-mono); font-size:11px; letter-spacing:.16em; text-transform:uppercase; color:var(--muted)}
.hero-meta .cell .v{font-family:var(--ff-display); font-size:19px; margin-top:5px}

/* ---------- work cards ---------- */
.grid{display:grid; gap:clamp(16px,2vw,26px)}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

.card{position:relative; display:block; background:var(--panel); border:1px solid var(--line);
  border-radius:var(--r-m); overflow:hidden; transition:transform .5s var(--ease-out), border-color .4s, box-shadow .5s}
.card:hover{transform:translateY(-6px); border-color:transparent;
  box-shadow:0 30px 60px -30px rgba(0,0,0,.7)}
.card .thumb{position:relative; aspect-ratio:4/3; overflow:hidden; background:var(--panel-2)}
.card.tall .thumb{aspect-ratio:3/4}
.card.wide .thumb{aspect-ratio:16/10}
.card .thumb img{width:100%; height:100%; object-fit:cover; transition:transform .7s var(--ease-out), filter .5s;
  filter:saturate(1) contrast(1)}
.card:hover .thumb img{transform:scale(1.05)}
.card .glow{position:absolute; inset:0; opacity:0; transition:opacity .4s; pointer-events:none;
  background:linear-gradient(180deg,transparent 40%, rgba(8,8,10,.78) 100%)}
.card:hover .glow{opacity:1}
.card .holo-edge{position:absolute; inset:0; border-radius:var(--r-m); padding:1px; opacity:0;
  background:var(--holo); background-size:200% 100%; filter:hue-rotate(var(--accent-hue));
  -webkit-mask:linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite:xor; mask-composite:exclude; transition:opacity .4s; animation:holoShift 6s linear infinite; pointer-events:none}
.card:hover .holo-edge{opacity:calc(1*var(--holo-intensity))}
.card .meta{position:absolute; left:0; right:0; bottom:0; padding:18px 20px; z-index:2;
  transform:translateY(8px); opacity:.0; transition:.45s var(--ease)}
.card:hover .meta{transform:none; opacity:1}
.card .meta .pn{font-family:var(--ff-display); font-size:21px; font-weight:600; letter-spacing:-.01em}
.card .meta .pc{font-family:var(--ff-mono); font-size:11px; letter-spacing:.12em; text-transform:uppercase; color:var(--accent)}
/* always-visible label bar variant */
.card .bar{display:flex; align-items:flex-start; justify-content:space-between; gap:14px; padding:16px 18px}
.card .bar .t{font-family:var(--ff-display); font-size:18px; font-weight:600}
.card .bar .y{font-family:var(--ff-mono); font-size:12px; color:var(--muted)}
.tags{display:flex; flex-wrap:wrap; gap:7px; margin-top:8px}
.tag{font-family:var(--ff-mono); font-size:10.5px; letter-spacing:.1em; text-transform:uppercase;
  color:var(--ink-2); border:1px solid var(--line); border-radius:100px; padding:4px 9px}

/* ---------- filter chips ---------- */
.chips{display:flex; flex-wrap:wrap; gap:10px}
.chip{font-family:var(--ff-mono); font-size:12px; letter-spacing:.1em; text-transform:uppercase;
  color:var(--ink-2); border:1px solid var(--line); border-radius:100px; padding:9px 16px; cursor:pointer;
  background:transparent; transition:.25s var(--ease)}
.chip[aria-pressed="true"]{color:var(--accent-ink); border-color:transparent; background:var(--accent)}
.chip:hover{color:var(--ink); border-color:var(--ink-2)}
.chip[aria-pressed="true"]:hover{color:var(--accent-ink)}

/* ---------- service rows ---------- */
.srow{display:grid; grid-template-columns:64px 1.1fr 1.4fr; gap:clamp(18px,3vw,48px);
  padding:clamp(28px,4vw,52px) 0; border-top:1px solid var(--line); align-items:start}
.srow .num{font-family:var(--ff-mono); font-size:14px; color:var(--muted)}
.srow .ttl{font-family:var(--ff-display); font-size:clamp(26px,3.4vw,44px); font-weight:500; letter-spacing:-.01em}
.srow ul{list-style:none; margin:14px 0 0; padding:0; columns:2; column-gap:30px}
.srow li{padding:7px 0; color:var(--ink-2); break-inside:avoid; display:flex; gap:10px}
.srow li::before{content:""; width:6px; height:6px; margin-top:9px; flex:none; background:var(--holo);
  filter:hue-rotate(var(--accent-hue))}

/* ---------- generic panel / stat ---------- */
.panel{background:var(--panel); border:1px solid var(--line); border-radius:var(--r-m)}
.stat{padding:26px 24px}
.stat .n{font-family:var(--ff-display); font-weight:600; font-size:clamp(36px,4.4vw,58px); letter-spacing:-.02em; line-height:1}
.stat .l{font-family:var(--ff-mono); font-size:11.5px; letter-spacing:.13em; text-transform:uppercase; color:var(--muted); margin-top:10px}

/* ---------- marquee ---------- */
.marquee{overflow:hidden; border-block:1px solid var(--line); padding:22px 0; -webkit-mask:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.marquee-track{display:flex; gap:54px; width:max-content; animation:scrollx 32s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee .it{font-family:var(--ff-display); font-size:clamp(22px,2.6vw,34px); font-weight:500; color:var(--muted);
  display:flex; align-items:center; gap:54px; white-space:nowrap}
.marquee .it::after{content:""; width:8px; height:8px; background:var(--holo); filter:hue-rotate(var(--accent-hue))}
@keyframes scrollx{to{transform:translateX(-50%)}}

/* ---------- section heading ---------- */
.sec-head{display:flex; justify-content:space-between; align-items:flex-end; gap:24px; margin-bottom:clamp(28px,4vw,52px); flex-wrap:wrap}
.sec-head .hl{max-width:680px}

/* ---------- CTA band ---------- */
.cta{position:relative; border-radius:var(--r-l); overflow:hidden; padding:clamp(40px,7vw,96px) clamp(28px,5vw,72px);
  background:var(--panel); border:1px solid var(--line)}
.cta .holo-wash{position:absolute; inset:0; opacity:calc(.16*var(--holo-intensity)); background:var(--holo);
  background-size:200% 100%; filter:hue-rotate(var(--accent-hue)) blur(2px); animation:holoShift 10s linear infinite}

/* ---------- footer ---------- */
.foot{border-top:1px solid var(--line); padding-block:clamp(48px,6vw,84px); position:relative; z-index:1}
.foot-grid{display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:40px}
.foot h4{font-family:var(--ff-mono); font-size:11px; letter-spacing:.16em; text-transform:uppercase; color:var(--muted); margin:0 0 16px}
.foot a{color:var(--ink-2); display:block; padding:5px 0; transition:color .25s}
.foot a:hover{color:var(--ink)}
.foot-bottom{display:flex; justify-content:space-between; gap:20px; flex-wrap:wrap; margin-top:48px; padding-top:24px;
  border-top:1px solid var(--line-2); font-family:var(--ff-mono); font-size:12px; color:var(--muted); letter-spacing:.04em}

/* ---------- forms ---------- */
.field{display:flex; flex-direction:column; gap:9px; margin-bottom:22px}
.field label{font-family:var(--ff-mono); font-size:11.5px; letter-spacing:.13em; text-transform:uppercase; color:var(--muted)}
.field input, .field textarea, .field select{font-family:var(--ff-body); font-size:16px; color:var(--ink);
  background:var(--panel); border:1px solid var(--line); border-radius:var(--r-s); padding:14px 16px; transition:border-color .25s, box-shadow .25s}
.field textarea{min-height:130px; resize:vertical}
.field input:focus, .field textarea:focus, .field select:focus{outline:none; border-color:var(--accent);
  box-shadow:0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent)}
.field.err input, .field.err textarea, .field.err select{border-color:#ff7a8a}
.field .msg{font-family:var(--ff-mono); font-size:11px; color:#ff7a8a; min-height:14px}
.opt-row{display:flex; flex-wrap:wrap; gap:10px}
.opt{font-family:var(--ff-mono); font-size:12px; letter-spacing:.06em; text-transform:uppercase; color:var(--ink-2);
  border:1px solid var(--line); border-radius:100px; padding:10px 16px; cursor:pointer; transition:.2s; background:transparent}
.opt[aria-pressed="true"], .opt.sel{background:var(--accent); color:var(--accent-ink); border-color:transparent; font-weight:700}

/* ---------- reveal ---------- */
[data-rise]{opacity:0; transform:translateY(26px); transition:opacity .8s var(--ease-out), transform .8s var(--ease-out)}
[data-rise].in{opacity:1; transform:none}
[data-rise][data-d="1"]{transition-delay:.08s}
[data-rise][data-d="2"]{transition-delay:.16s}
[data-rise][data-d="3"]{transition-delay:.24s}
[data-rise][data-d="4"]{transition-delay:.32s}
[data-rise][data-d="5"]{transition-delay:.40s}

/* ---------- theme toggle (in nav) ---------- */
.theme-toggle{width:42px; height:42px; flex:none; border:1px solid var(--line); border-radius:8px;
  background:transparent; color:var(--ink-2); cursor:pointer; display:grid; place-items:center;
  transition:color .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease)}
.theme-toggle:hover{color:var(--ink); border-color:var(--accent); background:var(--line-2)}
.theme-toggle svg{display:block}
/* dark mode → show sun (click to brighten); light mode → show moon (click to darken) */
.theme-toggle .ico-moon{display:none}
:root[data-theme="light"] .theme-toggle .ico-sun{display:none}
:root[data-theme="light"] .theme-toggle .ico-moon{display:block}

/* ---------- case study ---------- */
.cs-hero{display:grid; grid-template-columns:1fr; gap:34px}
.cs-meta{display:grid; grid-template-columns:repeat(4,1fr); gap:20px; border-top:1px solid var(--line); padding-top:26px}
.cs-meta .k{font-family:var(--ff-mono); font-size:11px; letter-spacing:.14em; text-transform:uppercase; color:var(--muted)}
.cs-meta .v{font-family:var(--ff-display); font-size:18px; margin-top:6px}
.frame{border:1px solid var(--line); border-radius:var(--r-m); overflow:hidden; background:var(--panel)}
.gal{display:grid; gap:clamp(14px,1.6vw,22px)}
figure{margin:0}
figcaption{font-family:var(--ff-mono); font-size:11px; letter-spacing:.1em; text-transform:uppercase; color:var(--muted); margin-top:10px}

/* prose */
.prose{max-width:64ch}
.prose p{color:var(--ink-2); font-size:18px}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .foot-grid{grid-template-columns:1fr 1fr}
  .g4{grid-template-columns:repeat(2,1fr)}
  .srow{grid-template-columns:48px 1fr; }
  .srow .desc-wrap{grid-column:2}
}
@media (max-width:760px){
  body{font-size:16px}
  .nav-links{display:none}
  .burger{display:flex}
  .g2,.g3,.g4{grid-template-columns:1fr}
  .cs-meta{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr}
  .srow{grid-template-columns:1fr; gap:14px}
  .srow ul{columns:1}
  .sec-head{align-items:flex-start}
  .hero-meta{gap:20px 30px}
  .nav-right .btn{display:none}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important; animation-iteration-count:1 !important}
  [data-rise]{opacity:1; transform:none}
}