/* ==========================================================================
   Marten Hiemstra - portfolio
   White, quiet, and almost entirely scroll driven.
   ========================================================================== */

:root{
  --ink:      #1d1d1f;
  --ink-2:    #424245;
  --muted:    #86868b;
  --line:     #e3e3e6;
  --line-2:   #f2f2f4;
  --bg:       #ffffff;
  --night:    #06070a;
  --accent:   #1d1d1f;
  --ease:     cubic-bezier(.22,.61,.36,1);
  --ease-out: cubic-bezier(.16,1,.3,1);
  --pad:      clamp(20px, 5vw, 80px);
}

*,*::before,*::after{ box-sizing:border-box; }

html{
  -webkit-text-size-adjust:100%;
  overflow-x:clip;
  scroll-behavior:smooth;
}

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
              "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:clip;
  font-feature-settings:"ss01","cv05";
}

img{ display:block; max-width:100%; }
a{ color:inherit; text-decoration:none; }

::selection{ background:var(--ink); color:#fff; }

/* --------------------------------------------------------------------------
   Scroll progress hairline
   -------------------------------------------------------------------------- */
.progress{
  position:fixed; inset:0 0 auto 0; height:2px; z-index:120;
  pointer-events:none;
}
.progress i{
  display:block; height:100%; width:0%;
  background:var(--ink);
  transform-origin:left;
  transition:width .08s linear;
}

/* --------------------------------------------------------------------------
   Top bar
   -------------------------------------------------------------------------- */
.topbar{
  position:fixed; top:0; left:0; right:0; z-index:110;
  display:flex; align-items:center; justify-content:space-between;
  padding:0 var(--pad); height:52px;
  background:rgba(255,255,255,.72);
  backdrop-filter:saturate(180%) blur(20px);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid transparent;
  opacity:0; transform:translateY(-100%);
  transition:opacity .5s var(--ease), transform .5s var(--ease),
             border-color .5s var(--ease), background .5s var(--ease), color .5s var(--ease);
}
.topbar.is-on{ opacity:1; transform:none; border-bottom-color:var(--line); }
.topbar.is-dark{
  background:rgba(6,7,10,.7); color:#fff; border-bottom-color:rgba(255,255,255,.12);
}
.topbar__name{ font-size:14px; font-weight:500; letter-spacing:-.01em; }
.topbar__nav{ display:flex; gap:clamp(14px,2.4vw,30px); }
.topbar__nav a{
  font-size:12px; color:inherit; opacity:.6;
  transition:opacity .25s var(--ease);
}
.topbar__nav a:hover{ opacity:1; }
@media (max-width:640px){ .topbar__nav a:nth-child(n+4){ display:none; } }

/* --------------------------------------------------------------------------
   Shared type
   -------------------------------------------------------------------------- */
.chapter{
  margin:0; font-size:11px; font-weight:500; letter-spacing:.14em;
  text-transform:uppercase; color:var(--muted);
}
.chapter--light{ color:rgba(255,255,255,.45); }

.eyebrow{
  margin:0 0 clamp(18px,2.4vw,30px);
  font-size:clamp(11px,1vw,13px); font-weight:500;
  letter-spacing:.2em; text-transform:uppercase; color:var(--muted);
}

.reveal{
  opacity:0; transform:translateY(14px);
  transition:opacity .9s var(--ease-out), transform .9s var(--ease-out);
}
.reveal.is-in{ opacity:1; transform:none; }

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */
.hero{
  position:relative;
  min-height:100svh;
  display:flex; flex-direction:column; justify-content:center;
  padding:0 var(--pad);
  overflow:hidden;
}
.hero__grid{
  position:absolute; inset:-10%;
  background-image:
    linear-gradient(to right, var(--line-2) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-2) 1px, transparent 1px);
  background-size:clamp(60px,7vw,110px) clamp(60px,7vw,110px);
  mask-image:radial-gradient(ellipse 80% 65% at 50% 45%, #000 20%, transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 80% 65% at 50% 45%, #000 20%, transparent 78%);
  opacity:0; animation:gridIn 2.4s var(--ease-out) .35s forwards;
}
@keyframes gridIn{ to{ opacity:1; } }

.hero__inner{ position:relative; max-width:1400px; width:100%; margin:0 auto; }

.hero__title{
  margin:0;
  font-size:clamp(56px, 13.2vw, 220px);
  line-height:.86;
  font-weight:600;
  letter-spacing:-.045em;
}
.hero__title .line{ display:block; overflow:hidden; padding-bottom:.06em; }
.hero__title .w{
  display:block;
  transform:translateY(105%) rotate(2deg);
  opacity:0;
  animation:wordUp 1.25s var(--ease-out) forwards;
}
.hero__title .line:nth-child(1) .w{ animation-delay:.15s; }
.hero__title .line:nth-child(2) .w{ animation-delay:.29s; }
@keyframes wordUp{ to{ transform:none; opacity:1; } }

.hero__sub{
  margin:clamp(26px,3.4vw,46px) 0 0;
  max-width:44ch;
  font-size:clamp(15px,1.35vw,21px);
  line-height:1.5;
  color:var(--ink-2);
  transition-delay:.75s;
}

.hero__cue{
  position:absolute; left:50%; bottom:34px; translate:-50% 0;
  width:1px; height:56px; background:var(--line);
  overflow:hidden;
}
.hero__cue span{
  position:absolute; inset:0; display:block; background:var(--ink);
  animation:cue 2.4s var(--ease) infinite;
}
@keyframes cue{
  0%{ transform:translateY(-100%); }
  55%,100%{ transform:translateY(100%); }
}

/* --------------------------------------------------------------------------
   Chapter 01 - the bicycle build (pinned canvas)
   -------------------------------------------------------------------------- */
.build{ height:520svh; position:relative; }
.build__sticky{
  position:sticky; top:0; height:100svh;
  display:flex; flex-direction:column;
  padding:calc(52px + clamp(20px,3vw,40px)) var(--pad) clamp(28px,4vw,56px);
  overflow:hidden;
}
.build__canvas{
  flex:1; width:100%; min-height:0;
  display:block;
}
.build__captions{
  position:relative;
  height:clamp(72px,9vw,104px);
  max-width:640px;
  margin:0 auto;
  width:100%;
}
.cap{
  position:absolute; inset:0; margin:0;
  text-align:center;
  font-size:clamp(15px,1.5vw,22px);
  line-height:1.45;
  color:var(--muted);
  opacity:0;
  transform:translateY(10px);
  transition:opacity .45s var(--ease), transform .45s var(--ease);
  will-change:opacity, transform;
}
.cap b{ color:var(--ink); font-weight:600; }
.cap.is-on{ opacity:1; transform:none; }

.build__hint{
  margin:0; text-align:center;
  font-size:10px; letter-spacing:.18em; text-transform:uppercase;
  color:#c7c7cc;
}

/* --------------------------------------------------------------------------
   Statement
   -------------------------------------------------------------------------- */
.statement{
  padding:clamp(120px,20vh,260px) var(--pad);
  max-width:1500px; margin:0 auto;
}
.statement__text{
  margin:0;
  font-size:clamp(26px,4.6vw,74px);
  line-height:1.12;
  letter-spacing:-.035em;
  font-weight:600;
}
.statement__text span{
  display:block;
  opacity:.12;
  transition:opacity .6s var(--ease);
}
.statement__text span.is-lit{ opacity:1; }

/* --------------------------------------------------------------------------
   Chapter 02 - the path (pinned horizontal rail)
   -------------------------------------------------------------------------- */
.path{ height:480svh; position:relative; }
.path__sticky{
  position:sticky; top:0; height:100svh;
  display:flex; flex-direction:column; justify-content:center;
  overflow:hidden;
}
.path__head{
  display:flex; align-items:baseline; justify-content:space-between;
  padding:0 var(--pad) clamp(28px,4vw,56px);
}
.path__count{
  margin:0; font-size:11px; letter-spacing:.1em; color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.path__count b{ color:var(--ink); font-weight:600; }
.path__count i{ font-style:normal; margin:0 4px; opacity:.4; }

.path__rail{
  display:flex; gap:clamp(20px,3vw,52px);
  padding-left:var(--pad);
  will-change:transform;
}
.card{
  flex:0 0 auto;
  width:clamp(268px, 34vw, 460px);
  padding:clamp(26px,3vw,46px);
  border:1px solid var(--line);
  border-radius:22px;
  background:#fff;
  transition:border-color .5s var(--ease), transform .7s var(--ease), box-shadow .7s var(--ease);
}
.card.is-near{
  border-color:#d0d0d5;
  box-shadow:0 30px 70px -50px rgba(0,0,0,.35);
}
.card__yrs{
  margin:0 0 clamp(30px,5vw,70px);
  font-size:12px; letter-spacing:.08em; color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.card__role{
  margin:0 0 6px;
  font-size:clamp(19px,2vw,28px); font-weight:600; letter-spacing:-.02em;
  line-height:1.15;
}
.card__org{
  margin:0 0 clamp(16px,2vw,26px);
  font-size:clamp(30px,3.6vw,54px); font-weight:600; letter-spacing:-.035em;
  line-height:1;
}
.card__meta{ margin:0 0 clamp(16px,2vw,24px); font-size:12px; color:var(--muted); }
.card__note{ margin:0; font-size:clamp(13px,1.05vw,16px); line-height:1.55; color:var(--ink-2); }

.card--sea .card__org{ font-style:italic; }

/* --------------------------------------------------------------------------
   Chapter 03 - awards
   -------------------------------------------------------------------------- */
.awards{
  padding:clamp(90px,14vh,190px) var(--pad);
  max-width:1200px; margin:0 auto;
}
.award{
  display:grid;
  grid-template-columns:minmax(120px, 220px) 1fr;
  gap:clamp(24px,5vw,80px);
  align-items:center;
  padding:clamp(44px,6vw,84px) 0;
  border-bottom:1px solid var(--line);
}
.awards .chapter + .award{ border-top:1px solid var(--line); margin-top:clamp(30px,5vw,60px); }

.award__art{ color:var(--ink); }
.award__art svg{ width:100%; height:auto; }
.award__art .dw{
  stroke-dasharray:var(--len,400);
  stroke-dashoffset:var(--len,400);
  transition:stroke-dashoffset 1.4s var(--ease-out);
}
.award.is-in .dw{ stroke-dashoffset:0; }
.award.is-in .dw:nth-child(2){ transition-delay:.10s; }
.award.is-in .dw:nth-child(3){ transition-delay:.18s; }
.award.is-in .dw:nth-child(4){ transition-delay:.26s; }
.award.is-in .dw:nth-child(5){ transition-delay:.34s; }
.award.is-in .dw:nth-child(6){ transition-delay:.42s; }
.award.is-in .dw:nth-child(7){ transition-delay:.50s; }
.award.is-in .dw:nth-child(8){ transition-delay:.58s; }

.award__yr{ margin:0 0 12px; font-size:12px; letter-spacing:.1em; color:var(--muted); }
.award__name{
  margin:0 0 10px;
  font-size:clamp(26px,4.4vw,64px); font-weight:600; letter-spacing:-.035em; line-height:1.02;
}
.award__name span{ color:var(--muted); font-weight:300; }
.award__proj{ margin:0 0 6px; font-size:clamp(15px,1.4vw,20px); color:var(--ink-2); }
.award__by{ margin:0; font-size:12px; color:var(--muted); }

.awards__foot{
  margin:clamp(30px,4vw,56px) 0 0;
  font-size:12px; color:var(--muted);
}

@media (max-width:720px){
  .award{ grid-template-columns:1fr; gap:22px; }
  .award__art{ width:110px; }
}

/* --------------------------------------------------------------------------
   Chapter 04 - the sea (the one dark room)
   -------------------------------------------------------------------------- */
.sea{ height:460svh; position:relative; background:var(--night); color:#fff; }
.sea__sticky{
  position:sticky; top:0; height:100svh;
  display:flex; flex-direction:column; justify-content:center;
  gap:clamp(18px,2.6vw,36px);
  padding:calc(52px + clamp(20px,3vw,40px)) var(--pad) clamp(30px,5vw,60px);
  overflow:hidden;
}
.sea__head{ max-width:900px; }
.sea__title{
  margin:.2em 0 .12em;
  font-size:clamp(44px,9.5vw,150px); font-weight:600;
  letter-spacing:-.045em; line-height:.92;
}
.sea__sub{ margin:0; font-size:clamp(12px,1.1vw,15px); color:rgba(255,255,255,.5); }

.sea__stage{ position:relative; margin:clamp(10px,2vw,26px) 0; }
.sea__country{
  margin:0 0 clamp(12px,2vw,26px);
  font-size:clamp(24px,4.6vw,64px); font-weight:500; letter-spacing:-.03em;
  line-height:1;
  min-height:1.05em;
}
.sea__country.is-flip{ animation:flip .5s var(--ease-out); }
@keyframes flip{
  0%{ opacity:0; transform:translateY(16px); filter:blur(4px); }
  100%{ opacity:1; transform:none; filter:none; }
}
.sea__route{ display:block; width:100%; height:clamp(110px,17vh,190px); overflow:visible; }
.sea__route .dot{ fill:rgba(255,255,255,.22); transition:fill .4s var(--ease), r .4s var(--ease); }
.sea__route .dot.on{ fill:#fff; }
.sea__idx{
  margin:clamp(10px,1.6vw,20px) 0 0;
  font-size:11px; letter-spacing:.1em; color:rgba(255,255,255,.42);
  font-variant-numeric:tabular-nums;
}
.sea__idx b{ color:#fff; font-weight:600; }
.sea__idx i{ font-style:normal; margin:0 4px; opacity:.5; }

.sea__roles{
  list-style:none; display:flex; flex-wrap:wrap; gap:10px;
  margin:0; padding:0;
}
.sea__roles li{
  border:1px solid rgba(255,255,255,.2); border-radius:999px;
  padding:7px 16px; font-size:12px; color:rgba(255,255,255,.8);
}
.sea__note{
  margin:0; max-width:58ch;
  font-size:clamp(13px,1.15vw,17px); line-height:1.6; color:rgba(255,255,255,.55);
}

/* --------------------------------------------------------------------------
   Portrait
   -------------------------------------------------------------------------- */
.portrait{
  display:grid;
  grid-template-columns:minmax(220px, 420px) 1fr;
  gap:clamp(34px,6vw,110px);
  align-items:center;
  padding:clamp(110px,18vh,230px) var(--pad);
  max-width:1300px; margin:0 auto;
}
.portrait__frame{
  position:relative; overflow:hidden; border-radius:28px;
  background:var(--line-2);
  clip-path:inset(0 0 100% 0);
  transition:clip-path 1.3s var(--ease-out);
}
.portrait.is-in .portrait__frame{ clip-path:inset(0 0 0 0); }
.portrait__frame img{
  width:100%; height:auto;
  transform:scale(1.14);
  filter:grayscale(1) contrast(1.04);
  transition:transform 1.6s var(--ease-out), filter 1.2s var(--ease);
}
.portrait.is-in .portrait__frame img{ transform:scale(1); }
.portrait__frame:hover img{ filter:grayscale(0); }
.portrait__sheen{
  position:absolute; inset:0;
  background:linear-gradient(105deg, transparent 38%, rgba(255,255,255,.55) 50%, transparent 62%);
  transform:translateX(-120%);
}
.portrait.is-in .portrait__sheen{ animation:sheen 1.7s var(--ease-out) .6s forwards; }
@keyframes sheen{ to{ transform:translateX(120%); } }

.portrait__meta h2{
  margin:0 0 12px;
  font-size:clamp(30px,5vw,76px); font-weight:600; letter-spacing:-.04em; line-height:1;
}
.portrait__line{
  margin:0 0 clamp(28px,4vw,52px);
  font-size:clamp(15px,1.4vw,21px); color:var(--ink-2);
}
.specs{ margin:0; display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:1px;
  background:var(--line); border:1px solid var(--line); border-radius:16px; overflow:hidden; }
.specs > div{ background:#fff; padding:clamp(16px,2vw,26px); }
.specs dt{ font-size:11px; letter-spacing:.1em; text-transform:uppercase; color:var(--muted); margin-bottom:7px; }
.specs dd{ margin:0; font-size:clamp(14px,1.15vw,17px); font-weight:500; letter-spacing:-.01em; }

@media (max-width:820px){
  .portrait{ grid-template-columns:1fr; }
  .portrait__frame{ max-width:300px; }
}

/* --------------------------------------------------------------------------
   Contact
   -------------------------------------------------------------------------- */
.contact{
  padding:clamp(90px,14vh,180px) var(--pad) clamp(60px,9vh,110px);
  max-width:1300px; margin:0 auto;
  border-top:1px solid var(--line);
}
.contact__link{
  display:inline-flex; align-items:center; gap:clamp(14px,2vw,30px);
  margin:clamp(26px,4vw,52px) 0 clamp(26px,4vw,44px);
  font-size:clamp(44px,10vw,150px); font-weight:600; letter-spacing:-.05em;
  line-height:1;
}
.contact__link svg{
  width:clamp(28px,5vw,74px); height:auto; flex:0 0 auto;
  transition:transform .5s var(--ease-out);
}
.contact__link:hover svg{ transform:translate(.12em,-.12em); }
.contact__link span{
  background-image:linear-gradient(currentColor,currentColor);
  background-size:0% 2px; background-position:0 92%; background-repeat:no-repeat;
  transition:background-size .6s var(--ease-out);
}
.contact__link:hover span{ background-size:100% 2px; }
.contact__foot{ margin:0; font-size:12px; color:var(--muted); }

/* --------------------------------------------------------------------------
   Reduced motion: show everything, move nothing
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{
    animation-duration:.001s !important; animation-delay:0s !important;
    transition-duration:.001s !important;
  }
  .hero__title .w{ transform:none; opacity:1; }
  .statement__text span{ opacity:1; }
  .portrait__frame{ clip-path:none; }
  .portrait__frame img{ transform:none; }
  .award__art .dw{ stroke-dashoffset:0; }
  .build{ height:auto; }
  .build__sticky{ position:static; height:auto; min-height:100svh; }
  .path{ height:auto; }
  .path__sticky{ position:static; height:auto; padding-bottom:40px; }
  .path__rail{ overflow-x:auto; padding-bottom:20px; }
  .sea{ height:auto; }
  .sea__sticky{ position:static; height:auto; min-height:100svh; }
  .cap{ position:static; opacity:1; transform:none; text-align:left; }
  .build__captions{ height:auto; }
}

/* --------------------------------------------------------------------------
   Late adjustments
   -------------------------------------------------------------------------- */
.build__hint{ transition:opacity .5s var(--ease); }
.build__hint.is-out{ opacity:0; }
.portrait__frame{ max-width:400px; }
.sea__route .dot{ transition:fill .4s var(--ease); }

/* --------------------------------------------------------------------------
   Phones: keep the pinned chapters from turning into a marathon
   -------------------------------------------------------------------------- */
@media (max-width:720px){
  .build{ height:380svh; }
  .path{  height:360svh; }
  .sea{   height:340svh; }
  .hero__cue{ display:none; }
  .statement{ padding:clamp(90px,14vh,150px) var(--pad); }
  .specs{ grid-template-columns:1fr; }
  .topbar__nav{ gap:16px; }
  .contact__link{ gap:14px; }
}