/* Keystone Lens website. Colours and frames come from the app (src/renderer/css/wow.css). */

@font-face {
  font-family: 'Marcellus';
  src: url('../fonts/marcellus.woff2') format('woff2');
  font-display: swap;
}
/* Marcellus' digits look like letters ("16" reads as "I6"), so digits come from Arial, as in the app. */
@font-face {
  font-family: 'Head Digits';
  src: local('Arial'), local('ArialMT');
  unicode-range: U+0030-0039, U+0025;
}

:root {
  color-scheme: dark;
  --gold: #ffd100;
  --gold-soft: #f0c95a;
  --gold-dark: #8a6a1e;
  --gold-border: linear-gradient(180deg, #f6dd8a 0%, #c9992f 35%, #7b5a17 70%, #4a3509 100%);
  --red-btn: linear-gradient(180deg, #a8150c 0%, #7a0d06 45%, #4d0703 100%);
  --red-btn-hover: linear-gradient(180deg, #c62a17 0%, #941309 45%, #5f0a04 100%);
  --bg: #0c0b09;
  --text: #f4f1e8;
  --text-dim: #b8b2a0;
  --text-faint: #8a8475;
  --panel: rgba(0, 0, 0, 0.45);
  --panel-border: #3b3426;
  --link: #f0c95a;
  --alliance: #4a8fe0;
  --horde: #e0453a;
  --font-head: 'Head Digits', 'Marcellus', 'Palatino Linotype', Georgia, serif;
  --font-body: 'Segoe UI', Arial, system-ui, sans-serif;
  --wrap: 1120px;
  --gutter: 16px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
}

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

body {
  margin: 0;
  background:
    radial-gradient(ellipse 90% 520px at 50% -120px, rgba(140, 100, 40, 0.22), transparent 70%),
    repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.012) 0 2px, transparent 2px 6px),
    linear-gradient(180deg, #16130f 0%, var(--bg) 600px);
  background-color: var(--bg);
  color: var(--text);
  font: 16px/1.6 var(--font-body);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--link);
  text-underline-offset: 2px;
}
a:hover {
  color: #fff3b0;
}

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

h1,
h2,
h3 {
  font-family: var(--font-head);
  font-weight: normal;
  color: var(--gold);
  text-shadow: 0 1px 1px #000, 0 0 6px #000;
  line-height: 1.2;
  margin: 0 0 0.5em;
  text-wrap: balance;
}
h1 {
  font-size: clamp(2rem, 1.2rem + 3.4vw, 3.2rem);
}
h2 {
  font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.2rem);
}
h3 {
  font-size: 1.3rem;
}

p {
  margin: 0 0 1em;
}

code,
kbd {
  font-family: Consolas, 'Cascadia Mono', monospace;
  font-size: 0.92em;
  color: #fff3b0;
  background: rgba(255, 209, 0, 0.08);
  border: 1px solid rgba(255, 209, 0, 0.18);
  border-radius: 3px;
  padding: 0 4px;
  overflow-wrap: anywhere;
}

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.dim {
  color: var(--text-dim);
}
.faint {
  color: var(--text-faint);
}
.small {
  font-size: 0.875rem;
}

.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  left: var(--gutter);
  top: 8px;
  z-index: 100;
  background: #000;
  padding: 6px 10px;
}

/* ------------------------------------------------------------------ header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background:
    linear-gradient(180deg, rgba(255, 210, 120, 0.08), transparent 60%),
    linear-gradient(180deg, rgba(44, 31, 18, 0.97) 0%, rgba(18, 12, 6, 0.97) 100%);
  border-bottom: 2px solid transparent;
  border-image: var(--gold-border) 1;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.6);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 12px 24px;
  min-height: 60px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-head);
  font-size: 1.3rem;
  color: var(--gold);
  text-decoration: none;
  text-shadow: 0 1px 1px #000;
  white-space: nowrap;
}
.brand img {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  box-shadow: 0 0 0 1px #000, 0 0 0 2px #8a6a1e;
}
.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 20px;
  margin-left: auto;
}
.site-nav a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.95rem;
}
.site-nav a:hover,
.site-nav a[aria-current='page'] {
  color: var(--gold);
}

/* ------------------------------------------------------------------ buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 8px 26px;
  font-family: var(--font-head);
  font-size: 1.2rem;
  line-height: 1.2;
  color: var(--gold);
  text-decoration: none;
  text-shadow: 0 1px 1px #000;
  background: var(--red-btn);
  border: 2px solid #b8913c;
  border-radius: 5px;
  box-shadow: inset 0 1px 0 rgba(255, 200, 150, 0.35), inset 0 -2px 4px rgba(0, 0, 0, 0.5), 0 3px 6px #000;
}
.btn:hover {
  background: var(--red-btn-hover);
  color: #fff3b0;
  border-color: #e3bb5a;
}
.btn:active {
  transform: translateY(1px);
}
.btn svg {
  width: 22px;
  height: 22px;
  flex: none;
}
.btn.quiet {
  min-height: 40px;
  font-size: 1rem;
  padding: 6px 18px;
  background: linear-gradient(180deg, #2a2116, #14100a);
  border-color: #6f5726;
}
.btn.quiet:hover {
  background: linear-gradient(180deg, #3a2d1c, #1c160d);
}

.download-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}
.btn.small {
  min-height: 36px;
  font-size: 0.95rem;
  padding: 4px 14px;
  gap: 8px;
}
.btn.small svg {
  width: 18px;
  height: 18px;
}

.download-box {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}
.download-box .facts {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.9rem;
}
.download-box .alt {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-dim);
}
.release-summary {
  margin: 4px 0 0;
  font-size: 0.9rem;
  color: var(--text-dim);
  max-width: 52ch;
}

/* ------------------------------------------------------------------ frames */
.frame {
  position: relative;
  border: 3px solid transparent;
  border-image: var(--gold-border) 1;
  background: #000;
  box-shadow: 0 0 0 1px #000, 0 12px 40px rgba(0, 0, 0, 0.75);
}
.frame img {
  display: block;
  width: 100%;
}

.panel {
  background:
    linear-gradient(180deg, rgba(255, 210, 120, 0.04), transparent 120px),
    var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.6);
  padding: 22px 24px;
}
.panel > :last-child {
  margin-bottom: 0;
}

a.shot {
  display: block;
  cursor: zoom-in;
}

/* ------------------------------------------------------------------ hero */
.hero {
  padding: 56px 0 40px;
}
.hero .wrap {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 40px;
  align-items: center;
}
.hero .lead {
  font-size: 1.15rem;
  color: var(--text-dim);
  max-width: 46ch;
}
.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  color: var(--text-dim);
  font-size: 0.9rem;
}
.badges li::before {
  content: '✔ ';
  color: #3fd23f;
}

/* ------------------------------------------------------------------ sections */
section {
  padding: 48px 0;
}
.section-head {
  max-width: 720px;
  margin-bottom: 32px;
}
.section-head p {
  color: var(--text-dim);
  font-size: 1.05rem;
}
.divider {
  height: 2px;
  border: 0;
  margin: 0;
  background: linear-gradient(90deg, transparent, #7b5a17 20%, #c9992f 50%, #7b5a17 80%, transparent);
  opacity: 0.6;
}

.feature {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: 36px;
  align-items: center;
  margin: 0 0 56px;
}
.feature:last-child {
  margin-bottom: 0;
}
.feature.flip > .frame,
.feature.flip > .shots {
  order: 2;
}
.feature ul {
  margin: 0;
  padding-left: 1.2em;
}
.feature li {
  margin-bottom: 0.5em;
}
.feature li::marker {
  color: var(--gold-dark);
}
.feature .text > :last-child {
  margin-bottom: 0;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}
.cards h3 {
  font-size: 1.15rem;
}
.cards p {
  color: var(--text-dim);
}

.shots {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}
.shots figure {
  margin: 0;
}
.shots figcaption {
  margin-top: 8px;
  font-size: 0.875rem;
  color: var(--text-dim);
}

.note {
  border-left: 3px solid var(--gold-dark);
  background: rgba(255, 209, 0, 0.05);
  padding: 12px 16px;
  margin: 0 0 1em;
  color: var(--text-dim);
}
.note strong {
  color: var(--text);
}

/* ------------------------------------------------------------------ FAQ */
.faq > * {
  max-width: 820px;
}
.faq details {
  border-bottom: 1px solid var(--panel-border);
  padding: 4px 0;
}
.faq summary {
  cursor: pointer;
  padding: 12px 0;
  font-family: var(--font-head);
  font-size: 1.15rem;
  color: var(--gold-soft);
  list-style: none;
  display: flex;
  gap: 12px;
  align-items: baseline;
}
.faq summary::-webkit-details-marker {
  display: none;
}
.faq summary::before {
  content: '+';
  flex: none;
  width: 1ch;
  color: var(--gold-dark);
  font-family: var(--font-body);
  font-weight: bold;
}
.faq details[open] summary::before {
  content: '−';
}
.faq details > div {
  padding: 0 0 12px calc(1ch + 12px);
  color: var(--text-dim);
}

/* ------------------------------------------------------------------ call to action */
.cta {
  text-align: center;
}
.cta .download-box {
  align-items: center;
}
.cta .release-summary {
  margin-left: auto;
  margin-right: auto;
}

.support {
  max-width: 560px;
  margin: 40px auto 0;
  padding-top: 28px;
  border-top: 1px solid var(--panel-border);
}
.support p {
  color: var(--text-dim);
}

/* ------------------------------------------------------------------ guide */
.guide {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  gap: 40px;
  padding: 40px 0 56px;
}
.toc {
  position: sticky;
  top: 84px;
  align-self: start;
  font-size: 0.95rem;
}
.toc h2 {
  font-size: 1.1rem;
}
.toc ol {
  margin: 0;
  padding-left: 1.3em;
}
.toc li {
  margin-bottom: 6px;
}
.toc li::marker {
  color: var(--gold-dark);
}
.toc a {
  color: var(--text-dim);
  text-decoration: none;
}
.toc a:hover {
  color: var(--gold);
}
.guide article {
  max-width: 760px;
}
.guide article section {
  padding: 0 0 40px;
}
.guide article h2 {
  padding-top: 8px;
}
.guide article h3 {
  margin-top: 1.4em;
}
.guide article ol,
.guide article ul {
  padding-left: 1.4em;
  margin: 0 0 1em;
}
.guide article li {
  margin-bottom: 0.45em;
}
.guide article li::marker {
  color: var(--gold-dark);
}
.guide .frame {
  margin: 8px 0 20px;
}
.guide .download-box {
  margin-bottom: 20px;
}
.guide dl {
  margin: 0 0 1em;
}
.guide dt {
  color: var(--gold-soft);
  font-weight: 600;
}
.guide dd {
  margin: 0 0 0.8em;
  color: var(--text-dim);
}

/* ------------------------------------------------------------------ footer */
.site-footer {
  margin-top: 24px;
  padding: 32px 0 40px;
  border-top: 2px solid transparent;
  border-image: var(--gold-border) 1;
  background: rgba(0, 0, 0, 0.35);
  color: var(--text-faint);
  font-size: 0.875rem;
}
.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  margin-bottom: 14px;
}
.site-footer p {
  max-width: 820px;
}

/* ------------------------------------------------------------------ screenshot viewer */
dialog#viewer {
  max-width: min(96vw, 1600px);
  max-height: 94vh;
  padding: 0;
  border: 3px solid transparent;
  border-image: var(--gold-border) 1;
  background: #000;
  color: var(--text);
  cursor: zoom-out;
}
dialog#viewer::backdrop {
  background: rgba(0, 0, 0, 0.85);
}
dialog#viewer figure {
  margin: 0;
}
dialog#viewer img {
  display: block;
  max-width: 100%;
  max-height: calc(94vh - 52px);
  width: auto;
  margin: 0 auto;
}
dialog#viewer figcaption {
  padding: 10px 14px;
  font-size: 0.9rem;
  color: var(--text-dim);
}

/* ------------------------------------------------------------------ narrow screens */
@media (max-width: 860px) {
  .hero {
    padding-top: 32px;
  }
  .hero .wrap,
  .feature,
  .guide {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }
  .feature.flip > .frame,
  .feature.flip > .shots {
    order: 0;
  }
  .toc {
    position: static;
  }
  .panel {
    padding: 18px 16px;
  }
}

@media (max-width: 560px) {
  .site-header .wrap {
    flex-wrap: wrap;
    padding-top: 8px;
    padding-bottom: 8px;
  }
  .site-nav {
    margin-left: 0;
    gap: 4px 16px;
  }
  html {
    scroll-padding-top: 110px;
  }
  .btn {
    width: 100%;
  }
  .download-box {
    align-items: stretch;
  }
  .download-actions {
    align-items: flex-start;
  }
  .btn.small {
    width: auto;
  }
  section {
    padding: 36px 0;
  }
}

.cards + p {
  margin: 20px 0 0;
}