/* MERCZ: the game's interface kit (src/ui.h) on the web. Dark steel plates with cut corners, pale type,
   one orange accent; the cockpit's green screens for the readouts. */
@font-face {
  font-family: "Chakra Petch";
  src: url("fonts/ChakraPetch-Regular.ttf") format("truetype");
  font-weight: 400;
  font-display: swap;
}

:root {
  color-scheme: dark;
  --bg: #0b0c0d;
  --panel: rgb(17 19 21 / 0.94);   /* UI_PANEL */
  --inset: rgb(8 9 10 / 0.9);      /* UI_INSET */
  --raised: rgb(40 44 48);         /* UI_RAISED */
  --edge: rgb(82 90 96);           /* UI_EDGE */
  --text: rgb(228 230 228);        /* UI_TEXT */
  --dim: rgb(150 158 162);         /* UI_DIM, a shade lighter to read on the web */
  --accent: rgb(240 124 28);       /* UI_ACCENT */
  --accent-hot: rgb(255 150 60);
  --accent-deep: rgb(96 44 8);
  --good: rgb(104 204 116);
  --ink: rgb(0 158 47);            /* the MFDs: LIME on their screen */
  --ink-hi: rgb(90 235 120);
  --screen: rgb(2 18 8);
  --tape-grey: rgb(58 60 64);
  --tape-red: rgb(150 36 30);
  --cut: 12px;
  --gutter: clamp(16px, 4vw, 40px);  /* UI_MARGIN */
  --gap: 16px;                       /* UI_GAP */
  --font: "Chakra Petch", ui-sans-serif, system-ui, sans-serif;
  --mark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='216 378 648 324'%3E%3Cpath d='M378 378h97L313 702h-97z'/%3E%3Cpath d='M572 378h97L507 702h-97z'/%3E%3Cpath d='M766 378h97L701 702h-97z'/%3E%3C/svg%3E");
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 var(--font);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
p { margin: 0 0 1em; }
h1, h2, h3 { font-weight: 400; margin: 0; text-transform: uppercase; letter-spacing: 0.04em; line-height: 1.1; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.skip { position: absolute; left: -999px; top: 8px; z-index: 100; background: var(--accent); color: #000; padding: 8px 16px; }
.skip:focus { left: 8px; }

/* A plate with cut corners (UiFrame): the edge drawn by ::before, the fill by ::after, both clipped to an octagon. */
.plate { position: relative; isolation: isolate; }
.plate::before, .plate::after {
  content: ""; position: absolute; z-index: -1;
  clip-path: polygon(var(--cut) 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, var(--cut) 100%, 0 calc(100% - var(--cut)), 0 var(--cut));
}
.plate::before { inset: 0; background: var(--edge); }
.plate::after { inset: 2px; background: var(--panel); }

/* Buttons: plain (UiButton) and the action (orange). */
.btn {
  --cut: 8px;
  display: inline-flex; align-items: center; gap: 10px;
  min-height: 48px; padding: 12px 24px;
  font: inherit; font-size: 16px; letter-spacing: 0.08em; text-transform: uppercase; text-decoration: none;
  color: var(--text); background: var(--edge); cursor: pointer; border: 0;
  clip-path: polygon(var(--cut) 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, var(--cut) 100%, 0 calc(100% - var(--cut)), 0 var(--cut));
  position: relative; isolation: isolate;
  transition: background-color 0.18s, color 0.18s, transform 0.18s;
}
.btn::after {
  content: ""; position: absolute; inset: 2px; z-index: -1; background: rgb(30 33 36);
  clip-path: inherit; transition: background-color 0.18s;
}
.btn:hover { background: var(--accent); }
.btn:hover::after { background: rgb(66 42 20); }
.btn svg { width: 20px; height: 20px; fill: currentColor; flex: none; }
.btn-action { background: var(--accent); color: #0b0c0d; font-weight: 400; }
.btn-action::after { background: var(--accent); }
.btn-action:hover { background: var(--accent-hot); }
.btn-action:hover::after { background: var(--accent-hot); }
.btn-action:active { transform: translateY(1px); }
.btn-small { min-height: 44px; padding: 8px 16px; font-size: 14px; }
.btn-big { min-height: 64px; padding: 16px 32px; font-size: 20px; }
.btn-big svg { width: 24px; height: 24px; }

/* The kit's mark beside a label */
.hash, .heading::before {
  display: inline-block; flex: none; width: 1.9em; height: 0.95em; background: var(--accent);
  -webkit-mask: var(--mark) center / contain no-repeat; mask: var(--mark) center / contain no-repeat;
}

/* Section titles as a panel's title bar (UiPanel): the mark, the title, a rule out to the edge. */
.heading { display: flex; align-items: center; gap: 14px; font-size: clamp(26px, 3.4vw, 40px); margin-bottom: 28px; }
.heading::before { content: ""; height: 0.7em; width: 1.4em; }
.heading::after { content: ""; flex: 1; height: 2px; background: var(--edge); }
.band .heading::after { display: none; }

/* Navigation */
.nav {
  position: fixed; inset: 0 0 auto; z-index: 50;
  display: flex; align-items: center; gap: 24px;
  padding: 10px var(--gutter);
  background: rgb(8 9 10 / 0.72);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 2px solid rgb(82 90 96 / 0.5);
}
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-size: 24px; letter-spacing: 0.06em; }
.logo-mark { width: 38px; height: 19px; fill: var(--accent); }
.nav nav { display: flex; gap: 4px; margin-left: auto; }
.nav nav a {
  text-decoration: none; text-transform: uppercase; letter-spacing: 0.08em; font-size: 14px; color: var(--dim);
  padding: 12px 12px; transition: color 0.18s;
}
.nav nav a:hover { color: var(--accent); }
@media (max-width: 760px) { .nav nav { display: none; } .nav .btn { margin-left: auto; } }

/* Hero */
.hero { position: relative; min-height: min(100svh, 980px); display: flex; align-items: flex-end; overflow: hidden; }
.hero-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 60% 50%; animation: drift 30s ease-out both; }
@keyframes drift { from { transform: scale(1.08); } to { transform: scale(1); } }
.hero::before { /* dark where the words are, fading into the page below */
  content: ""; position: absolute; inset: 0; z-index: 1;
  background:
    linear-gradient(90deg, rgb(8 9 10 / 0.92) 0%, rgb(8 9 10 / 0.6) 40%, rgb(8 9 10 / 0) 70%),
    linear-gradient(0deg, var(--bg) 0%, rgb(11 12 13 / 0) 35%);
}
.hero::after { /* the screens' scanlines, faint */
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: repeating-linear-gradient(0deg, rgb(0 0 0 / 0.12) 0 1px, transparent 1px 4px);
}
@media (max-width: 760px) {
  .hero::before { background: linear-gradient(0deg, var(--bg) 0%, rgb(8 9 10 / 0.82) 45%, rgb(8 9 10 / 0.6) 100%); }
}
.hero-in { position: relative; z-index: 2; width: 100%; max-width: 1280px; margin: 0 auto; padding: 120px var(--gutter) clamp(48px, 8vh, 96px); }
.hero-in > * { max-width: 640px; }
.eyebrow { display: flex; align-items: center; gap: 12px; text-transform: uppercase; letter-spacing: 0.14em; font-size: 14px; color: var(--accent); }
.eyebrow .hash { width: 26px; height: 13px; }
.hero-title { display: flex; align-items: center; gap: 0.25em; font-size: clamp(64px, 12vw, 148px); letter-spacing: 0.06em; line-height: 1; margin: 8px 0 6px; }
.hero-mark { width: 1em; height: 0.5em; fill: var(--accent); flex: none; }
.expand { text-transform: uppercase; letter-spacing: 0.22em; font-size: clamp(11px, 1.3vw, 14px); color: var(--dim); margin-bottom: 28px; }
.hero-lead { font-size: clamp(22px, 2.6vw, 30px); line-height: 1.3; text-transform: uppercase; letter-spacing: 0.03em; }
.hero-lead em { font-style: normal; color: var(--accent); display: block; }
.hero-copy { color: rgb(210 214 214); font-size: 18px; }
.ctas { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 14px; }
.fine { font-size: 13px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--dim); }

/* The readout: four of the cockpit's green screens */
.readout {
  list-style: none; margin: 0 auto; padding: 0 var(--gutter); max-width: 1280px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--gap);
  position: relative; z-index: 3;
}
.readout li {
  --cut: 10px;
  position: relative; padding: 18px 20px; background: var(--screen); border: 0;
  clip-path: polygon(var(--cut) 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, var(--cut) 100%, 0 calc(100% - var(--cut)), 0 var(--cut));
  box-shadow: inset 0 0 0 2px rgb(0 110 40);
  background-image: repeating-linear-gradient(0deg, rgb(0 0 0 / 0.28) 0 1px, transparent 1px 4px);
}
.readout b { display: block; font-weight: 400; font-size: clamp(34px, 4vw, 48px); line-height: 1; color: var(--ink-hi); text-shadow: 0 0 12px rgb(60 255 120 / 0.45); }
.readout span { display: block; margin-top: 6px; text-transform: uppercase; letter-spacing: 0.1em; font-size: 13px; color: var(--ink); }
@media (max-width: 760px) { .readout { grid-template-columns: repeat(2, 1fr); } }

/* Sections */
.section { max-width: 1280px; margin: 0 auto; padding: clamp(64px, 10vw, 112px) var(--gutter) 0; }
.intro { max-width: 720px; color: rgb(210 214 214); margin-top: -8px; margin-bottom: 28px; }
.dim { color: var(--dim); }

/* Trailer */
.video { aspect-ratio: 16 / 9; overflow: hidden; --cut: 16px; }
.video > img, .video > iframe {
  position: absolute; inset: 2px; width: calc(100% - 4px); height: calc(100% - 4px); object-fit: cover; border: 0; z-index: 0;
  clip-path: polygon(14px 0, calc(100% - 14px) 0, 100% 14px, 100% calc(100% - 14px), calc(100% - 14px) 100%, 14px 100%, 0 calc(100% - 14px), 0 14px);
}
.video > img { filter: brightness(0.55) saturate(0.8); }
.video-play {
  --cut: 14px; position: absolute; left: 50%; top: 50%; translate: -50% -50%; z-index: 1;
  width: clamp(64px, 10vw, 104px); height: clamp(64px, 10vw, 104px); display: grid; place-items: center; border: 0; cursor: pointer;
  background: var(--accent); color: #0b0c0d;
  clip-path: polygon(var(--cut) 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, var(--cut) 100%, 0 calc(100% - var(--cut)), 0 var(--cut));
  transition: background-color 0.18s, scale 0.18s;
}
.video-play svg { width: 42%; height: 42%; fill: currentColor; margin-left: 6px; }
.video-play:hover:not(:disabled) { background: var(--accent-hot); scale: 1.06; }
.video-play:disabled { background: var(--raised); color: var(--dim); cursor: default; }
.video-soon {
  position: absolute; left: 50%; top: calc(50% + clamp(40px, 6.5vw, 72px)); translate: -50% 0; z-index: 1; margin: 0;
  text-transform: uppercase; letter-spacing: 0.2em; font-size: 14px; color: var(--text); white-space: nowrap;
}
.video.has-video .video-soon { display: none; }

/* Features */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); gap: var(--gap); }
.card { padding: 28px 28px 20px; }
.card .glyph { width: 56px; height: 56px; margin-bottom: 18px; }
.card h3 { font-size: 21px; margin-bottom: 12px; }
.card h3::after { content: ""; display: block; width: 40px; height: 2px; background: var(--accent); margin-top: 12px; }
.card p { color: rgb(205 210 210); font-size: 16px; }

/* The band: the bill, and the modules that run it up */
.band {
  margin-top: clamp(64px, 10vw, 112px);
  background: linear-gradient(180deg, rgb(17 19 21) 0%, rgb(8 9 10) 100%);
  border-block: 2px solid rgb(82 90 96 / 0.5);
}
.band-in {
  max-width: 1280px; margin: 0 auto; padding: clamp(48px, 7vw, 80px) var(--gutter);
  display: grid; grid-template-columns: 1fr 1.25fr; gap: clamp(32px, 5vw, 64px); align-items: center;
}
.band-copy p { color: rgb(210 214 214); }
.modules { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.modules li {
  --cut: 10px; position: relative; padding: 12px 8px 14px; text-align: center; background: rgb(20 20 19);
  clip-path: polygon(var(--cut) 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, var(--cut) 100%, 0 calc(100% - var(--cut)), 0 var(--cut));
  box-shadow: inset 0 0 0 2px var(--raised); transition: box-shadow 0.18s;
}
.modules li:hover { box-shadow: inset 0 0 0 2px var(--accent); }
.modules img { width: 100%; max-width: 128px; margin: 0 auto 6px; }
.modules span { display: block; font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--dim); line-height: 1.3; }
@media (max-width: 900px) { .band-in { grid-template-columns: 1fr; } }
@media (max-width: 480px) { .modules { grid-template-columns: repeat(2, 1fr); } }

/* Worlds */
.worlds { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); }
.world { --cut: 14px; display: flex; flex-direction: column; }
.world img {
  margin: 2px 2px 0; width: calc(100% - 4px); aspect-ratio: 16 / 10; object-fit: cover;
  clip-path: polygon(12px 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%, 0 12px);
}
.world-in { padding: 20px 24px 8px; }
.world h3 { font-size: 24px; margin: 4px 0 10px; }
.world p { color: rgb(205 210 210); font-size: 16px; }
.tag { text-transform: uppercase; letter-spacing: 0.14em; font-size: 13px; color: var(--accent); margin: 0; }
.demo-tag { color: var(--good); }
@media (max-width: 900px) { .worlds { grid-template-columns: 1fr; } }

/* Screenshots */
.gallery { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.gallery button {
  --cut: 10px; display: block; width: 100%; padding: 2px; border: 0; cursor: zoom-in; background: var(--edge);
  clip-path: polygon(var(--cut) 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, var(--cut) 100%, 0 calc(100% - var(--cut)), 0 var(--cut));
  transition: background-color 0.18s;
}
.gallery img {
  width: 100%; aspect-ratio: 16 / 9; object-fit: cover; transition: transform 0.4s ease-out, filter 0.18s;
  clip-path: polygon(9px 0, calc(100% - 9px) 0, 100% 9px, 100% calc(100% - 9px), calc(100% - 9px) 100%, 9px 100%, 0 calc(100% - 9px), 0 9px);
  filter: saturate(0.9);
}
.gallery button:hover, .gallery button:focus-visible { background: var(--accent); }
.gallery button:hover img { transform: scale(1.03); filter: saturate(1.05); }
@media (max-width: 900px) { .gallery { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .gallery { grid-template-columns: 1fr; } }

.lightbox { border: 0; padding: 0; background: transparent; max-width: 100vw; max-height: 100vh; width: 100vw; height: 100vh; overflow: hidden; }
.lightbox::backdrop { background: rgb(4 5 6 / 0.94); }
.lightbox[open] { display: grid; place-items: center; }
.lightbox img { max-width: min(94vw, 1920px); max-height: 82vh; width: auto; object-fit: contain; box-shadow: 0 0 0 2px var(--edge); }
.lightbox-cap { position: absolute; bottom: 3vh; left: 0; right: 0; text-align: center; padding: 0 72px; margin: 0; text-transform: uppercase; letter-spacing: 0.1em; font-size: 14px; color: var(--text); }
.lb-btn {
  --cut: 8px; position: absolute; width: 52px; height: 52px; border: 0; cursor: pointer;
  font: 32px/1 system-ui, sans-serif; color: var(--text); background: rgb(30 33 36);
  clip-path: polygon(var(--cut) 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, var(--cut) 100%, 0 calc(100% - var(--cut)), 0 var(--cut));
  transition: background-color 0.18s, color 0.18s;
}
.lb-btn:hover { background: var(--accent); color: #0b0c0d; }
.lb-prev { left: 16px; top: 50%; translate: 0 -50%; }
.lb-next { right: 16px; top: 50%; translate: 0 -50%; }
.lb-close { right: 16px; top: 16px; }

/* The demo: between two strips of the game's warning tape */
.demo { margin-top: clamp(64px, 10vw, 112px); }
.tape {
  height: 14px;
  background: repeating-linear-gradient(-60deg, var(--tape-grey) 0 14px, var(--tape-red) 14px 28px);
}
.demo-in {
  --cut: 18px; max-width: 1200px; margin: clamp(40px, 6vw, 72px) auto; width: calc(100% - 2 * var(--gutter));
  display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: center; padding: clamp(28px, 4vw, 48px);
}
.demo-in::before { background: var(--accent); }
.demo-in p { color: rgb(210 214 214); }
.list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.list li { display: flex; gap: 12px; align-items: baseline; }
.list li::before { content: ""; flex: none; width: 16px; height: 8px; background: var(--accent); -webkit-mask: var(--mark) center / contain no-repeat; mask: var(--mark) center / contain no-repeat; translate: 0 -1px; }
.demo-cta { text-align: center; }
.demo-cta .fine { margin-top: 16px; line-height: 1.8; }
@media (max-width: 900px) { .demo-in { grid-template-columns: 1fr; } .btn-big { width: 100%; justify-content: center; } }

/* Footer */
.foot {
  max-width: 1280px; margin: 0 auto; padding: 32px var(--gutter) 48px;
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px 32px; color: var(--dim); font-size: 14px;
}
.foot p { margin: 0; }
.foot .logo { font-size: 20px; color: var(--text); }
.foot p:last-child { margin-left: auto; }
.foot p a { color: var(--accent); text-transform: uppercase; letter-spacing: 0.08em; }

/* Things slide in as they come into view (only with the script, and not for those who'd rather they didn't) */
.js .reveal { opacity: 0; translate: 0 18px; transition: opacity 0.6s ease-out, translate 0.6s ease-out; }
.js .reveal.in { opacity: 1; translate: 0 0; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-img { animation: none; }
  .js .reveal { opacity: 1; translate: none; transition: none; }
  * { transition-duration: 0.01ms !important; }
}