/* Salt Line — marketing page.
   The palette below is art/palette_16.png, in order. Nothing on this page uses
   a colour that is not in the game. */
:root {
  --sand:      #e8dcc8;
  --rock:      #a89680;
  --bedrock:   #6b5c4d;
  --shadow:    #4a3e36;
  --sky-hi:    #24365c;
  --sky-mid:   #3c5480;
  --sky-lo:    #6e86a8;
  --hull:      #5a6b58;
  --hull-hi:   #7e8f76;
  --hull-edge: #2e3830;
  --st:        #b5674a;
  --st-hi:     #d8907a;
  --st-dmg:    #6e3a2c;
  --ui-fg:     #f5efe2;
  --ui-bg:     #2e2a26;
  --alert:     #e8a33d;

  --mono: ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Consolas,
          "DejaVu Sans Mono", "Liberation Mono", monospace;
  --maxw: 1180px;
  --rule: 1px solid color-mix(in srgb, var(--rock) 34%, transparent);
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--ui-bg);
  color: var(--sand);
  font-family: var(--mono);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  background-image:
    radial-gradient(1200px 600px at 50% -10%, color-mix(in srgb, var(--sky-hi) 70%, transparent), transparent 70%),
    repeating-linear-gradient(0deg, rgba(0,0,0,.16) 0 1px, transparent 1px 3px);
}

.px { image-rendering: pixelated; image-rendering: crisp-edges; }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 20;
  background: var(--alert); color: var(--ui-bg); padding: .5rem 1rem;
}
.skip:focus { left: 0; }

:focus-visible { outline: 2px solid var(--alert); outline-offset: 3px; }

a { color: var(--alert); text-underline-offset: 3px; }
a:hover { color: var(--st-hi); }

h1, h2, h3 { line-height: 1.15; letter-spacing: .04em; margin: 0 0 .6em; }
h2 {
  font-size: clamp(1.4rem, 1.1rem + 1.2vw, 2rem);
  text-transform: uppercase;
}
h2::before { content: "▚ "; color: var(--alert); }
h3 { font-size: 1.05rem; text-transform: uppercase; color: var(--sand); }

code { color: var(--alert); font-family: var(--mono); font-size: .92em; }

section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 4.5rem 1.25rem;
  border-top: var(--rule);
}
section:first-of-type { border-top: 0; }

.lede { color: var(--rock); max-width: 62ch; margin-top: -.4rem; }
.small { font-size: .85rem; color: var(--rock); }

/* ------------------------------------------------------------- top bar */
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; flex-wrap: wrap;
  padding: .55rem 1.25rem;
  background: color-mix(in srgb, var(--ui-bg) 88%, transparent);
  backdrop-filter: blur(6px);
  border-bottom: var(--rule);
}
.brand {
  display: inline-flex; align-items: center; gap: .6rem;
  color: var(--sand); text-decoration: none;
  font-weight: 700; letter-spacing: .18em;
}
.brand-spr { width: 45px; height: 18px; }
.topbar nav { display: flex; gap: 1.1rem; flex-wrap: wrap; font-size: .85rem; }
.topbar nav a { color: var(--rock); text-decoration: none; text-transform: uppercase; letter-spacing: .08em; }
.topbar nav a:hover, .topbar nav a[aria-current="true"] { color: var(--alert); }
.topbar nav .ext { color: var(--sand); }

/* ---------------------------------------------------------------- hero */
.hero {
  position: relative;
  max-width: none;
  padding: 0 0 4rem;
  border-top: 0;
  overflow: hidden;
}
.hero-art { position: relative; line-height: 0; }
.hero-art img {
  width: 100%; height: clamp(260px, 42vw, 460px); object-fit: cover;
  object-position: 6% 62%;
  filter: saturate(1.05);
}
.hero-art::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg,
    color-mix(in srgb, var(--ui-bg) 40%, transparent) 0%,
    transparent 35%,
    color-mix(in srgb, var(--ui-bg) 92%, transparent) 92%,
    var(--ui-bg) 100%);
}
.crt {
  position: absolute; inset: 0; pointer-events: none;
  background:
    repeating-linear-gradient(0deg, rgba(0,0,0,.22) 0 2px, transparent 2px 4px),
    radial-gradient(120% 90% at 50% 50%, transparent 55%, rgba(0,0,0,.45) 100%);
  animation: flicker 4.2s steps(2, end) infinite;
}
@keyframes flicker { 0%,96%,100% { opacity: 1; } 97% { opacity: .82; } }

.hero-copy {
  position: relative;
  max-width: var(--maxw);
  margin: -5.5rem auto 0;
  padding: 0 1.25rem;
}
.kicker {
  color: var(--alert); letter-spacing: .22em; font-size: .8rem;
  text-transform: uppercase; margin: 0 0 .4rem;
}
.blink { animation: blink 1.1s steps(2, end) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.hero h1 {
  font-size: clamp(2.6rem, 1.6rem + 5vw, 5rem);
  letter-spacing: .1em;
  margin: 0 0 .35em;
  color: var(--ui-fg);
  text-shadow:
    3px 3px 0 var(--st-dmg),
    6px 6px 0 color-mix(in srgb, var(--ui-bg) 80%, transparent);
}
.tagline { max-width: 58ch; font-size: clamp(1rem, .95rem + .3vw, 1.15rem); }

.badges {
  display: flex; flex-wrap: wrap; gap: .5rem;
  list-style: none; margin: 1.2rem 0; padding: 0;
  font-size: .78rem; text-transform: uppercase; letter-spacing: .08em;
}
.badges li {
  border: 1px solid var(--bedrock);
  background: color-mix(in srgb, var(--hull-edge) 55%, transparent);
  color: var(--sand);
  padding: .25rem .6rem;
}

.cta { display: flex; flex-wrap: wrap; gap: .7rem; margin: 1.4rem 0 1rem; }
.btn {
  display: inline-block;
  padding: .7rem 1.2rem;
  border: 2px solid var(--sand);
  color: var(--sand);
  background: transparent;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: .1em;
  font-size: .85rem;
  box-shadow: 4px 4px 0 var(--hull-edge);
  transition: transform .06s linear, box-shadow .06s linear, background .12s;
}
.btn:hover { background: color-mix(in srgb, var(--sand) 12%, transparent); color: var(--sand); }
.btn:active { transform: translate(4px, 4px); box-shadow: 0 0 0 var(--hull-edge); }
.btn.primary {
  background: var(--alert); border-color: var(--alert); color: var(--ui-bg);
  font-weight: 700;
}
.btn.primary:hover { background: var(--st-hi); border-color: var(--st-hi); color: var(--ui-bg); }
.btn.ghost { border-color: var(--bedrock); color: var(--rock); box-shadow: none; }
.btn.ghost:hover { color: var(--sand); border-color: var(--sand); }
.fineprint { font-size: .8rem; color: var(--rock); }

/* ---------------------------------------------------- gameplay preview */
.gameplay-preview {
  display: grid;
  grid-template-columns: minmax(0, .7fr) minmax(0, 1.3fr);
  align-items: center;
  gap: 2rem;
  padding-top: 2.5rem;
  padding-bottom: 2.5rem;
}
.gameplay-preview > * { min-width: 0; }
.gameplay-preview .preview-copy p { color: var(--rock); max-width: 42ch; }
.gameplay-preview .shot-figure { margin: 0; }

/* ----------------------------------------------------------- shareware */
.shareware {
  display: grid; gap: 2rem;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: start;
  max-width: var(--maxw); margin: 0 auto; padding: 4.5rem 1.25rem;
  border-top: var(--rule);
}
.panel {
  border: 1px solid var(--bedrock);
  background: color-mix(in srgb, #000 28%, var(--ui-bg));
  box-shadow: 6px 6px 0 rgba(0,0,0,.35);
}
.dosbar {
  display: flex; justify-content: space-between; align-items: center;
  background: var(--sand); color: var(--ui-bg);
  padding: .15rem .6rem; font-size: .78rem; letter-spacing: .1em;
}
.dosbar .dots { letter-spacing: -.1em; }
pre.dos {
  margin: 0; padding: 1rem .9rem;
  color: var(--sand); font-size: clamp(.66rem, .52rem + .42vw, .84rem);
  line-height: 1.55; overflow-x: auto;
}
.sw-copy .note {
  border-left: 3px solid var(--alert);
  padding-left: .9rem; color: var(--rock);
}

/* ---------------------------------------------------------------- cards */
.cards { display: grid; gap: 1.2rem; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.card {
  border: 1px solid var(--bedrock);
  background: color-mix(in srgb, var(--sky-hi) 22%, transparent);
  padding: 1.2rem;
}
.card p { color: color-mix(in srgb, var(--sand) 86%, var(--rock)); }
.card .num { color: var(--alert); margin-right: .4rem; }
.card code {
  display: block; margin-top: .8rem; padding: .45rem .6rem;
  background: rgba(0,0,0,.35); border-left: 2px solid var(--alert);
  font-size: .8rem;
}

/* ---------------------------------------------------------------- media */
figure { margin: 0; }
figcaption { font-size: .85rem; color: var(--rock); margin-top: .6rem; }
figcaption.top { margin: 0 0 .8rem; color: var(--sand); text-transform: uppercase; letter-spacing: .06em; font-size: .8rem; }

.shot-figure { margin: 2rem 0 2.5rem; }
.shot-figure img {
  width: 100%; max-width: 900px; height: auto;
  border: 1px solid var(--bedrock);
  background: var(--sky-hi);
}
.media-grid { display: grid; gap: 1.6rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); }
.media-grid img { width: 100%; height: auto; border: 1px solid var(--bedrock); }

.split { display: grid; gap: 1.6rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); margin-top: 2.5rem; }
.split > figure { border: 1px solid var(--bedrock); padding: 1.2rem; background: rgba(0,0,0,.2); }
.state-row { display: flex; gap: 1.6rem; align-items: flex-end; flex-wrap: wrap; }
.state-row div { text-align: center; }
.state-row span { display: block; margin-top: .5rem; font-size: .7rem; color: var(--rock); letter-spacing: .08em; }
.x6 { width: calc(17px * 5); height: auto; }

.sweep-wrap { display: flex; align-items: center; gap: 1.2rem; flex-wrap: wrap; }
.sweep {
  width: 112px; height: 112px;
  background-image: url("assets/sprites/barrel_strip_5deg.png");
  background-size: 2128px 112px;   /* 19 frames x 28px, at 4x */
  background-repeat: no-repeat;
  image-rendering: pixelated;
  animation: sweep 3.6s steps(18, end) infinite alternate;
}
@keyframes sweep { from { background-position: 0 0; } to { background-position: -2016px 0; } }
.readout {
  margin: 0; color: var(--alert); letter-spacing: .12em;
  border: 1px solid var(--bedrock); background: rgba(0,0,0,.4); padding: .4rem .7rem;
}
@media (prefers-reduced-motion: reduce) {
  .sweep { animation: none; background-position: -1008px 0; }
  .crt, .blink { animation: none; }
}

.palette { margin-top: 2.5rem; }
.palette img { width: 100%; max-width: 768px; height: auto; border: 1px solid var(--bedrock); }

/* ------------------------------------------------------------ modifiers */
.mods { display: grid; gap: 1.2rem; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); margin-top: 1.6rem; }
.mod-col { border-top: 2px solid var(--alert); padding-top: .8rem; }
.mod-col h3 { color: var(--alert); font-size: .8rem; }
.mod-col ul { list-style: none; margin: 0; padding: 0; }
.mod-col li { padding: .3rem 0; border-bottom: 1px dotted color-mix(in srgb, var(--rock) 40%, transparent); font-size: .9rem; }

/* ---------------------------------------------------------------- build */
.build-grid { display: grid; gap: 2rem; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); align-items: start; }
.codeblock { position: relative; border: 1px solid var(--bedrock); background: rgba(0,0,0,.4); }
.codeblock pre { margin: 0; padding: 1rem; overflow-x: auto; font-size: .85rem; }
.codeblock code { color: var(--sand); }
.copy {
  position: absolute; top: .5rem; right: .5rem;
  font-family: var(--mono); font-size: .7rem; letter-spacing: .1em;
  text-transform: uppercase; cursor: pointer;
  background: var(--hull-edge); color: var(--sand);
  border: 1px solid var(--bedrock); padding: .25rem .55rem;
}
.copy:hover { background: var(--alert); color: var(--ui-bg); }

.keys { width: 100%; border-collapse: collapse; font-size: .88rem; }
.keys th, .keys td { text-align: left; padding: .45rem .6rem; border-bottom: 1px dotted color-mix(in srgb, var(--rock) 40%, transparent); vertical-align: top; }
.keys th { width: 10rem; font-weight: 400; color: var(--sand); }
kbd {
  font-family: var(--mono); font-size: .78rem;
  border: 1px solid var(--rock); border-bottom-width: 2px;
  padding: 0 .35rem; background: rgba(0,0,0,.35); color: var(--sand);
}

.reqs { padding: 1.2rem; }
.reqs h3 { color: var(--alert); font-size: .8rem; }
.reqs dl { display: grid; grid-template-columns: auto 1fr; gap: .2rem .9rem; margin: 0 0 1.4rem; font-size: .85rem; }
.reqs dt { color: var(--rock); text-transform: uppercase; letter-spacing: .06em; }
.reqs dd { margin: 0; }
.tools { list-style: none; margin: 0; padding: 0; font-size: .82rem; color: var(--rock); }
.tools li { padding: .25rem 0; }

/* ----------------------------------------------------------- alpha note */
.checks { list-style: none; margin: 1.2rem 0 0; padding: 0; max-width: 80ch; }
.checks li { position: relative; padding: .35rem 0 .35rem 2rem; }
.checks li::before { position: absolute; left: 0; font-weight: 700; }
.checks .yes::before { content: "[×]"; color: var(--hull-hi); }
.checks .no::before { content: "[ ]"; color: var(--alert); }

/* -------------------------------------------------------------- footer */
footer { border-top: var(--rule); background: rgba(0,0,0,.28); }
.foot-grid {
  max-width: var(--maxw); margin: 0 auto; padding: 2.5rem 1.25rem;
  display: grid; gap: 1.6rem; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  align-items: start;
}
.brand-foot { letter-spacing: .2em; font-weight: 700; margin: 0 0 .3rem; }
footer nav { display: grid; gap: .4rem; font-size: .88rem; }
.colophon { max-width: 46ch; }

/* Grid children default to min-width:auto, which lets a wide <pre> or a
   pixel image push the whole page sideways. */
.shareware > *, .build-grid > *, .cards > *, .media-grid > *, .split > *,
.mods > *, .foot-grid > * { min-width: 0; }
.media-grid img, .split img, .palette img, .shot-figure img { max-width: 100%; }

@media (max-width: 760px) {
  .gameplay-preview, .shareware, .build-grid { grid-template-columns: minmax(0, 1fr); }
  .hero-copy { margin-top: -3rem; }
  .keys th { width: 7.5rem; }
}

/* Download cards: steps, buttons along the bottom, the visitor's own platform lit. */
.dl .card { display: flex; flex-direction: column; }
.dl .card ol { margin: 0 0 1rem; padding-left: 1.2rem; flex: 1; }
.dl .card li { margin: .3rem 0; }
.dl .card .btn { margin: .3rem .4rem 0 0; align-self: flex-start; }
.dl .arch { color: var(--rock); font-size: .8rem; margin-left: .3rem; }
.dl .card.yours { border-color: var(--alert); }
.dl .card.yours h3::after { content: "this device"; color: var(--alert); font-size: .72rem; margin-left: .5rem; }
.dl .card li code { display: inline; margin: 0; padding: .05rem .3rem; border-left: 0; }

/* Bundled notices stay readable on narrow screens and at larger text sizes. */
details { margin: 1rem 0; border: 1px solid var(--bedrock); padding: 1rem; }
summary { cursor: pointer; color: var(--alert); }
.license-text { white-space: pre-wrap; overflow-wrap: anywhere; font: inherit; font-size: .85rem; }

/* Art-direction boards retain their complete composition at every size. */
.concept-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem; margin-top: 1.5rem; }
.concept-grid figure { min-width: 0; margin: 0; }
.concept-grid a { display: block; border: 1px solid var(--rock); }
.concept-grid a:hover { border-color: var(--alert); }
.concept-grid img { display: block; width: 100%; height: auto; }
.concept-grid figcaption { padding-top: .6rem; color: var(--sand); }
@media (max-width: 760px) { .concept-grid { grid-template-columns: minmax(0, 1fr); } }

/* ------------------------------------------------ coming-soon store buttons */
/* A store button without a URL yet (main.js LINKS) is a label, not a link. */
.btn[aria-disabled="true"] {
  border-style: dashed;
  border-color: var(--bedrock);
  color: var(--rock);
  background: transparent;
  box-shadow: none;
  cursor: default;
}
.btn[aria-disabled="true"]:hover { background: transparent; color: var(--rock); }
.btn[aria-disabled="true"]:active { transform: none; }
.btn.primary[aria-disabled="true"] { border-color: var(--st); color: var(--st-hi); }
footer [aria-disabled="true"] { color: var(--rock); text-decoration: none; cursor: default; }

/* ----------------------------------------------------------------- get it */
.cards.get .card { display: flex; flex-direction: column; gap: .8rem; }
.cards.get .card p { flex: 1; }
.cards.get .btn { align-self: flex-start; }
details.testers summary, #build summary { cursor: pointer; color: var(--sand); }
#build summary h2 { display: inline; margin: 0; }
.dev-builds { margin: .6rem 0 0; padding-left: 1.2rem; line-height: 1.9; }

/* ------------------------------------------------------------------ press */
.press-grid { display: grid; gap: 1.5rem; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); align-items: start; }
.facts { display: grid; grid-template-columns: max-content 1fr; gap: .4rem 1rem; margin: 0; }
.facts dt { color: var(--rock); font-family: var(--mono); font-size: .8rem; text-transform: uppercase; }
.facts dd { margin: 0; }
.kit { padding-left: 1.2rem; line-height: 1.9; }
.art-note { max-width: 70ch; margin-top: 1rem; }

/* The live button leads, whichever it is (main.js marks it primary). */
.hero .cta .btn.primary { order: -1; }
.facts { padding: 1rem 1.2rem; }

/* --------------------------------------------------------- device frames */
/* Generic hardware drawn in CSS: no mockup images, no real-device likeness. */
.device { position: relative; margin: 0 auto; background: #141210; box-shadow: 0 10px 0 #0006; }
.device img { display: block; width: 100%; height: auto; }
.device-phone {
  /* A phone held landscape: thick rounded body, a camera hole on one end. */
  padding: clamp(8px, 2.2vw, 16px) clamp(14px, 4vw, 30px);
  border: 2px solid var(--shadow);
  border-radius: clamp(18px, 5vw, 36px);
  max-width: 700px;
}
.device-phone::before {
  content: ""; position: absolute; top: 50%; left: clamp(5px, 1.4vw, 11px);
  width: clamp(5px, 1.2vw, 8px); aspect-ratio: 1; border-radius: 50%;
  background: #2b2723; transform: translateY(-50%);
}
.device-phone img { border-radius: 4px; }
.device-monitor {
  /* A desktop monitor: thin bezel, a stand under it. */
  padding: clamp(6px, 1.4vw, 12px);
  border: 2px solid var(--shadow);
  border-radius: 8px;
  margin-bottom: clamp(26px, 5vw, 42px);
}
.device-monitor::after {
  content: ""; position: absolute; left: 50%; top: 100%;
  width: 22%; height: clamp(18px, 4vw, 34px);
  transform: translateX(-50%);
  background: linear-gradient(#1c1916, #141210);
  clip-path: polygon(38% 0, 62% 0, 70% 70%, 100% 72%, 100% 100%, 0 100%, 0 72%, 30% 70%);
}

#concepts { margin-top: 2.5rem; }