/*! HTML5 Boilerplate v9.0.1 | MIT License | https://html5boilerplate.com/ */

/* main.css 3.0.0 | MIT License | https://github.com/h5bp/main.css#readme */
/*
 * What follows is the result of much research on cross-browser styling.
 * Credit left inline and big thanks to Nicolas Gallagher, Jonathan Neal,
 * Kroc Camen, and the H5BP dev community and team.
 */

/* ==========================================================================
   Base styles: opinionated defaults
   ========================================================================== */

html {
  color: #222;
  font-size: 1em;
  line-height: 1.4;
}

/*
 * Remove text-shadow in selection highlight:
 * https://twitter.com/miketaylr/status/12228805301
 *
 * Customize the background color to match your design.
 */

::-moz-selection {
  background: #C0AD88;
  text-shadow: none;
}

::selection {
  background: #C0AD88;
  text-shadow: none;
}

/*
 * A better looking default horizontal rule
 */

hr {
  display: block;
  height: 1px;
  border: 0;
  border-top: 1px solid #ccc;
  margin: 1em 0;
  padding: 0;
}

/*
 * Remove the gap between audio, canvas, iframes,
 * images, videos and the bottom of their containers:
 * https://github.com/h5bp/html5-boilerplate/issues/440
 */

audio,
canvas,
iframe,
img,
svg,
video {
  vertical-align: middle;
}

/*
 * Remove default fieldset styles.
 */

fieldset {
  border: 0;
  margin: 0;
  padding: 0;
}

/*
 * Allow only vertical resizing of textareas.
 */

textarea {
  resize: vertical;
}

/* ==========================================================================
   Author's custom styles
   ========================================================================== */

/* ── Reset & Base ─────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --sand:      #D4C4A0;
  --sand-dark: #C0AD88;
  --sand-light:#EDE4D0;
  --brown:     #5C3D1E;
  --brown-mid: #8B6530;
  --brown-light:#A07840;
  --dark:      #2A1F12;
  --text:      #3D2B1A;
  --text-muted:#7A6248;
  --white:     #FDFAF5;
  --border:    rgba(92,61,30,0.15);
  --accent:    #1F3A5F;
  --accent-dark:#15294A;
  --accent-rgb: 31, 58, 95;
  --warn:      #C9492D; /* terracotta — alpha/early markers */
  --warn-dark: #A53A22;

  --font-sans: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius: 8px;
  --shadow: 0 4px 24px rgba(42,31,18,0.10);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 18px;
  line-height: 1.7;
  color: var(--text);
  background: var(--white);
}

img { max-width: 100%; display: block; }
a { color: var(--brown-mid); text-decoration: none; }
a:hover { color: var(--brown); }

/* ── Layout ───────────────────────────────────────────── */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 80px 0; }
.section--dark { background: var(--sand-light); }

/* ── Buttons ──────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  transition: all 0.2s;
  border: 2px solid transparent;
}

.btn--primary { background: var(--brown); color: var(--white); border-color: var(--brown); }
.btn--primary:hover { background: var(--dark); border-color: var(--dark); color: var(--white); }
.btn--outline { background: transparent; color: var(--brown); border-color: var(--brown); }
.btn--outline:hover { background: var(--brown); color: var(--white); }
.btn--sm { padding: 8px 18px; font-size: 15px; }
.btn--lg { padding: 16px 40px; font-size: 19px; }

/* accent CTA — used for primary "Скачать" calls-to-action */
.btn--cta {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
  box-shadow: 0 2px 10px rgba(var(--accent-rgb), 0.32);
}
.btn--cta:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(var(--accent-rgb), 0.48);
  transform: translateY(-1px);
}
.btn--cta:active { transform: translateY(0); }
/* on dark/sand backgrounds it still pops */
.nav .btn--cta { box-shadow: 0 1px 0 rgba(0,0,0,0.05), 0 0 0 0 transparent; }
.nav .btn--cta:hover { box-shadow: 0 4px 14px rgba(var(--accent-rgb), 0.4); }
/* override nav__links default text colour so CTA label stays white */
.nav__links .btn--cta,
.nav__links .btn--cta:hover { color: var(--white); }

/* ── Nav ──────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(253,250,245,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav__logo {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  color: var(--brown);
  letter-spacing: 0.05em;
}

.nav__links { display: flex; gap: 28px; list-style: none; align-items: center; }
.nav__links a { font-size: 16px; font-weight: 500; color: var(--text-muted); transition: color 0.2s; }
.nav__links a:hover { color: var(--brown); }

/* ── Mobile nav burger ────────────────────────────────── */
.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  background: none;
  border: none;
  cursor: pointer;
  border-radius: 4px;
}

.nav__burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--brown);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
  transform-origin: center;
}

.nav--open .nav__burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav--open .nav__burger span:nth-child(2) { opacity: 0; }
.nav--open .nav__burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Hero ─────────────────────────────────────────────── */
.hero {
  position: relative;
  text-align: center;
  padding: 100px 0 80px;
  background: var(--sand);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background-image: url('../img/bg-pattern.jpg');
  background-size: cover;
  opacity: 0.25;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.hero__logo {
  width: 180px;
  height: 180px;
  object-fit: contain;
}

.hero__badge {
  position: absolute;
  top: 48px;
  right: 64px;
  width: 120px;
  height: auto;
  z-index: 2;
  pointer-events: none;
}

@media (max-width: 900px) {
  .hero__badge { width: 96px; top: 32px; right: 32px; }
}

@media (max-width: 600px) {
  .hero__badge { width: 72px; top: 20px; right: 16px; }
}

.hero__title {
  font-family: var(--font-mono);
  font-size: 56px;
  font-weight: 600;
  color: var(--brown);
  letter-spacing: 0.05em;
  line-height: 1;
}

.hero__sub {
  font-size: 15px;
  font-weight: 500;
  color: var(--brown-mid);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.hero__desc {
  font-size: 19px;
  color: var(--text);
  max-width: 560px;
  line-height: 1.6;
}

.hero__actions { display: flex; gap: 12px; margin-top: 8px; }
.hero__version { font-size: 14px; color: var(--text-muted); margin-top: 4px; }

/* ── Section Titles ───────────────────────────────────── */
.section__title { font-size: 34px; font-weight: 600; color: var(--brown); margin-bottom: 20px; }
.section__title--center { text-align: center; }
.section__sub { text-align: center; color: var(--text-muted); max-width: 560px; margin: 0 auto 40px; }

/* ── About ────────────────────────────────────────────── */
.about__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about__text p { color: var(--text-muted); margin-bottom: 16px; }
.about__stats { display: flex; flex-direction: column; gap: 24px; }

.stat {
  padding: 20px 24px;
  background: var(--sand-light);
  border-radius: var(--radius);
  border-left: 4px solid var(--brown-mid);
}

.stat__num { display: block; font-family: var(--font-mono); font-size: 22px; font-weight: 600; color: var(--brown); }
.stat__label { font-size: 14px; color: var(--text-muted); }

/* ── Features ─────────────────────────────────────────── */
.features__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 40px; }

.feature-card {
  padding: 28px 24px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover { transform: translateY(-3px); box-shadow: 0 8px 32px rgba(42,31,18,0.14); }
.feature-card__icon { font-size: 28px; margin-bottom: 12px; }
.feature-card h3 { font-size: 17px; font-weight: 600; color: var(--brown); margin-bottom: 8px; }
.feature-card p { font-size: 16px; color: var(--text-muted); line-height: 1.6; }

/* ── Screenshots ──────────────────────────────────────── */
.screenshot-placeholder {
  aspect-ratio: 16/10;
  background: var(--sand);
  border: 2px dashed var(--sand-dark);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 14px;
}

.screenshots__note { text-align: center; margin-top: 16px; font-size: 14px; color: var(--text-muted); font-style: italic; }

/* ── FAQ ──────────────────────────────────────────────── */
.faq__list { max-width: 720px; margin: 40px auto 0; display: flex; flex-direction: column; gap: 12px; }

.faq__item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.faq__item summary {
  padding: 18px 20px;
  font-weight: 600;
  font-size: 16px;
  color: var(--brown);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after { content: '+'; font-size: 20px; font-weight: 400; color: var(--brown-light); transition: transform 0.2s; }
.faq__item[open] summary::after { transform: rotate(45deg); }
.faq__item p { padding: 0 20px 18px; font-size: 16px; color: var(--text-muted); line-height: 1.65; }

/* ── Changelog ────────────────────────────────────────── */
.changelog__list { max-width: 720px; margin: 40px auto 0; display: flex; flex-direction: column; gap: 12px; }

.changelog__item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

/* native <details> as collapsible card */
.changelog__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}
.changelog__head::-webkit-details-marker { display: none; }

.changelog__chevron {
  font-size: 18px;
  color: var(--brown-light);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}
.changelog__item[open] .changelog__chevron { transform: rotate(180deg); }

.changelog__body {
  padding: 0 24px 24px;
}

.changelog__intro {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 16px;
}

.changelog__meta { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 0; }

.changelog__version {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  color: var(--brown);
  background: var(--sand);
  padding: 4px 12px;
  border-radius: 4px;
}

.changelog__date { font-size: 14px; color: var(--text-muted); }
.changelog__changes { list-style: none; display: flex; flex-direction: column; gap: 8px; }

.changelog__changes li {
  font-size: 16px;
  color: var(--text-muted);
  padding-left: 20px;
  position: relative;
}

.changelog__changes li::before { content: '→'; position: absolute; left: 0; color: var(--brown-light); font-size: 12px; }

.changelog__changes code {
  font-family: var(--font-mono);
  font-size: 14px;
  background: var(--sand-light);
  padding: 1px 7px;
  border-radius: 4px;
  color: var(--brown);
}

/* ── Roadmap ──────────────────────────────────────────── */
.roadmap__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }

.roadmap__item {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--white);
}

.roadmap__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--brown-mid);
  background: var(--sand-light);
  padding: 3px 10px;
  border-radius: 4px;
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.roadmap__item h3 { font-size: 17px; font-weight: 600; color: var(--brown); margin-bottom: 8px; }
.roadmap__item p { font-size: 15px; color: var(--text-muted); line-height: 1.6; }

/* ── Screenshots (real) ───────────────────────────────── */
.screenshots__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 40px; }

.screenshot {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.screenshot img {
  width: 100%;
  display: block;
  transition: transform 0.3s;
}

.screenshot:hover img { transform: scale(1.02); }

.screenshot__cap {
  padding: 10px 14px;
  font-size: 14px;
  color: var(--text-muted);
  background: var(--sand-light);
  border-top: 1px solid var(--border);
}

/* ── Collab ───────────────────────────────────────────── */
.collab__inner { display: flex; flex-direction: column; align-items: center; }

.collab__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  width: 100%;
  margin-top: 0;
}

.collab__card {
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.collab__card h3 { font-size: 17px; font-weight: 600; color: var(--brown); margin-bottom: 10px; }
.collab__card p { font-size: 15px; color: var(--text-muted); line-height: 1.6; margin-bottom: 8px; }

.collab__donate {
  margin-top: 12px;
  font-size: 14px;
  color: var(--text-muted);
  padding: 10px 14px;
  background: var(--sand-light);
  border-radius: var(--radius);
  line-height: 1.8;
}

.collab__contacts {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 12px;
}

.collab__contacts a {
  font-size: 14px;
  font-weight: 500;
  color: var(--brown-mid);
}

.collab__contacts a:hover { color: var(--brown); }

.collab__cta {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed rgba(92, 61, 30, 0.25);
  font-size: 14px;
  font-style: italic;
  color: var(--brown);
  text-align: center;
}

/* ── Platforms strip (homepage CTA) ───────────────────── */
.platforms { padding: 32px 0; background: var(--white); }

.platforms__strip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding: 18px 28px;
  background: var(--sand-light);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--brown);
  text-decoration: none;
  transition: background 0.2s, transform 0.2s;
  flex-wrap: wrap;
  max-width: 880px;
  margin: 0 auto;
}

.platforms__strip:hover { background: var(--sand); transform: translateY(-1px); color: var(--brown); }

.platforms__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.platforms__item i { font-size: 20px; color: var(--brown-mid); }
.platforms__item small { font-size: 11px; color: var(--brown-mid); margin-left: 4px; letter-spacing: 0.1em; }

.platforms__divider {
  width: 1px;
  height: 22px;
  background: rgba(92, 61, 30, 0.25);
}

.platforms__cta {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  color: var(--accent);
}
.platforms__strip:hover .platforms__cta { color: var(--accent-dark); }

@media (max-width: 700px) {
  .platforms__strip { flex-direction: column; gap: 10px; padding: 16px 18px; }
  .platforms__divider { display: none; }
  .platforms__cta { margin-left: 0; }
}

/* ── Mobile section (homepage) ────────────────────────── */
.mobile__grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 56px;
  align-items: center;
}

.mobile__badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--brown);
  background: var(--sand-light);
  border: 1px solid var(--border);
  padding: 5px 12px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 14px;
}

.mobile__lead {
  color: var(--text-muted);
  margin-bottom: 20px;
  font-size: 17px;
  line-height: 1.6;
}

.mobile__features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
}

.mobile__features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.5;
}

.mobile__features li i {
  color: var(--brown-mid);
  font-size: 18px;
  flex-shrink: 0;
  margin-top: 2px;
}

.mobile__features li i.ph-warning-circle { color: #b08243; }

.mobile__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 12px;
}

.mobile__meta {
  font-size: 13px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.mobile__visual {
  display: flex;
  justify-content: center;
}

.mobile__placeholder {
  aspect-ratio: 9/16;
  width: 100%;
  max-width: 280px;
  background: linear-gradient(135deg, var(--sand-light) 0%, var(--sand) 100%);
  border: 2px dashed var(--sand-dark);
  border-radius: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--brown-mid);
}

.mobile__placeholder i { font-size: 48px; opacity: 0.7; }
.mobile__placeholder span { font-size: 14px; font-weight: 500; }

/* ── Team layers (archaeological strata) ──────────────── */
.team-layers__wrap {
  max-width: 980px;
  position: relative;
}

.layer {
  position: relative;
  padding: 40px 8px 48px;
  border-top: 1px solid rgba(92, 61, 30, 0.22);
}

.layer:first-of-type { border-top: 2px solid var(--brown); }

/* alternating tint to suggest stratigraphic depth */
.layer:nth-of-type(1) { background: linear-gradient(180deg, rgba(212,196,160,0.05) 0%, transparent 100%); }
.layer:nth-of-type(2) { background: linear-gradient(180deg, rgba(212,196,160,0.12) 0%, transparent 100%); }
.layer:nth-of-type(3) { background: linear-gradient(180deg, rgba(212,196,160,0.22) 0%, transparent 100%); }

.layer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  margin-bottom: 22px;
  color: var(--brown-mid);
}

.layer__label { display: inline-flex; gap: 6px; }
.layer__num { color: var(--text-muted); }

.layer__body {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 48px;
  align-items: start;
}

.layer__main { padding-left: 6px; }

.layer__name {
  font-size: 30px;
  font-weight: 600;
  color: var(--brown);
  line-height: 1.15;
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}

.layer__role {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 18px;
}

.layer__bio {
  font-size: 16px;
  color: var(--text);
  line-height: 1.65;
  max-width: 56ch;
}

.layer__bio code {
  font-family: var(--font-mono);
  font-size: 14px;
  background: var(--sand-light);
  padding: 1px 6px;
  border-radius: 3px;
  color: var(--brown);
}

.layer__side {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-top: 8px;
}

.layer__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.layer__tags .tag {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--brown);
  background: var(--white);
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: 4px;
  letter-spacing: 0.02em;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: transform .15s, box-shadow .15s;
}

.layer__tags .tag:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(42,31,18,0.08);
}

/* brand-coloured tech tags (text + tinted bg + border) */
.tag--cpp     { color: #00599C; background: #EAF2F8; border-color: rgba(0,89,156,0.30); }
.tag--qt      { color: #2BA341; background: #ECF8EE; border-color: rgba(65,205,82,0.40); }
.tag--windows { color: #0078D4; background: #E7F3FB; border-color: rgba(0,120,212,0.30); }
.tag--android { color: #1F8F50; background: #E8F7EE; border-color: rgba(61,220,132,0.40); }
.tag--kotlin  { color: #7F52FF; background: #F1EBFF; border-color: rgba(127,82,255,0.30); }
.tag--html    { color: #E34F26; background: #FCEDE7; border-color: rgba(227,79,38,0.30); }
.tag--css     { color: #1572B6; background: #E7F0FA; border-color: rgba(21,114,182,0.30); }
.tag--js      { color: #B7A700; background: #FBF7DA; border-color: rgba(247,223,30,0.50); }
.tag--react   { color: #0E83A0; background: #E3F5FA; border-color: rgba(97,218,251,0.55); }
.tag--nextjs  { color: #1A1A1A; background: #ECECEC; border-color: rgba(0,0,0,0.25); }
.tag--python  { color: #3776AB; background: #E7F0F7; border-color: rgba(55,118,171,0.30); }
.tag--archaeology { color: #8B5A2B; background: #F5ECDA; border-color: rgba(139,90,43,0.30); }

.layer__contacts {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 6px;
  border-top: 1px dashed rgba(92, 61, 30, 0.22);
}

.layer__contacts a,
.layer__contacts span {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--brown-mid);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: color .15s;
}

.layer__contacts a:hover { color: var(--accent); }
.layer__contacts--quiet span { color: var(--text-muted); font-style: italic; }
.layer__contacts i { font-size: 16px; }

.layer-strata-end {
  margin: 0;
  padding: 14px 8px 60px;
  border-top: 2px solid var(--brown);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  background: linear-gradient(180deg, rgba(92,61,30,0.06) 0%, transparent 100%);
}

@media (max-width: 800px) {
  .layer { padding: 32px 6px 40px; }
  .layer__body { grid-template-columns: 1fr; gap: 24px; }
  .layer__name { font-size: 26px; }
  .layer__side {
    padding-top: 0;
    border-top: 1px dashed rgba(92, 61, 30, 0.22);
    padding-top: 18px;
  }
  .layer__contacts { border-top: none; padding-top: 0; }
}

/* ── Team section ─────────────────────────────────────── */
.team__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 32px;
}

.team__card {
  padding: 28px 24px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}

.team__card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(42,31,18,0.10);
}

.team__avatar {
  width: 56px;
  height: 56px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: var(--sand-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brown-mid);
  font-size: 28px;
}

.team__card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--brown);
  margin-bottom: 6px;
}

.team__role {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 10px;
}

.team__link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--brown-mid);
}

.team__link:hover { color: var(--brown); }

/* ── Download ─────────────────────────────────────────── */
.download { background: var(--sand); text-align: center; }
.download__inner { display: flex; flex-direction: column; align-items: center; gap: 16px; }
.download__logo { width: 100px; height: 100px; border-radius: 50%; object-fit: cover; border: 3px solid rgba(92,61,30,0.2); }
.download h2 { font-size: 28px; color: var(--brown); }
.download p { color: var(--text-muted); }
.download__meta { font-size: 14px; color: var(--text-muted); margin-top: -8px; }

/* ── Page Hero (inner pages) ──────────────────────────── */
.page-hero {
  background: var(--sand);
  padding: 56px 0 48px;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('../img/bg-pattern.jpg');
  background-size: cover;
  opacity: 0.2;
}

.page-hero .container { position: relative; z-index: 1; }

.page-hero__title {
  font-family: var(--font-mono);
  font-size: 42px;
  font-weight: 600;
  color: var(--brown);
  margin-bottom: 8px;
}

.page-hero__sub {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 720px;
}

.page-hero__actions {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.features__category {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 600;
  color: var(--brown);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid rgba(92,61,30,0.15);
}

/* ── Nav active ───────────────────────────────────────── */
.nav__active { color: var(--brown) !important; font-weight: 600 !important; }
.nav__active-btn { background: var(--dark) !important; border-color: var(--dark) !important; }

/* ── Features grid variants ───────────────────────────── */
.features__grid--3 { grid-template-columns: repeat(3, 1fr); }

/* ── Screenshot feature (alternating) ────────────────── */
.screenshot-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 64px;
}

.screenshot-feature:last-child { margin-bottom: 0; }

.screenshot-feature--reverse .screenshot-feature__img { order: 2; }
.screenshot-feature--reverse .screenshot-feature__text { order: 1; }

.screenshot-feature__img img {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  width: 100%;
}

.screenshot-feature__text h2 {
  font-size: 24px;
  font-weight: 600;
  color: var(--brown);
  margin-bottom: 12px;
}

.screenshot-feature__text p {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 10px;
}

/* ── Changelog badge ──────────────────────────────────── */
.changelog__item--current {
  border-color: var(--brown-mid);
}

.changelog__badge {
  font-size: 12px;
  font-weight: 600;
  color: var(--white);
  background: var(--brown-mid);
  padding: 3px 10px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ── Changelog platform header (auto-generated sections) ──── */
.changelog__platform {
  max-width: 720px;
  margin: 32px auto 12px;
  padding: 0 4px 10px;
  border-bottom: 1px solid var(--brown-light);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.changelog__platform:first-child { margin-top: 0; }
.changelog__platform-title {
  font-size: 22px;
  font-weight: 600;
  margin: 0;
  color: var(--text);
}
.changelog__platform-repo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.changelog__platform-repo:hover { color: var(--accent); }

/* ── Changelog: two parallel branches (desktop | mobile) ── */
.changelog__lead {
  max-width: 1040px;
  margin: 0 auto;
  text-align: center;
  color: var(--text-muted);
  font-size: 15px;
}
.changelog__branches {
  max-width: 1040px;
  margin: 36px auto 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.changelog__branch { min-width: 0; } /* let column shrink so long code can't blow out the grid */
.changelog__branch-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 0 4px 12px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--brown-light);
}
.changelog__platform-title i { color: var(--brown-mid); margin-right: 4px; }

/* vertical "branch" rail with a node per release */
.changelog__rail {
  position: relative;
  padding-left: 26px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.changelog__rail::before {
  content: '';
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(var(--brown-light), rgba(0, 0, 0, 0));
}
.changelog__rail .changelog__item { position: relative; }
.changelog__rail .changelog__item::before {
  content: '';
  position: absolute;
  left: -26px;
  top: 26px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--brown-light);
  box-shadow: 0 0 0 3px var(--white); /* mask the rail line passing behind the node */
}
.changelog__rail .changelog__item--current::before {
  background: var(--accent);
  border-color: var(--accent);
}

@media (max-width: 880px) {
  .changelog__branches { grid-template-columns: 1fr; gap: 0; }
  .changelog__branch + .changelog__branch { margin-top: 40px; }
}

.changelog__body h1, .changelog__body h2, .changelog__body h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 14px 0 6px;
  color: var(--text);
}
.changelog__body ul, .changelog__body ol { padding-left: 20px; margin: 8px 0; }
.changelog__body li { margin: 4px 0; line-height: 1.6; }
.changelog__body p { margin: 8px 0; line-height: 1.7; }
.changelog__body code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  background: var(--sand-light);
  padding: 1px 6px;
  border-radius: 3px;
  overflow-wrap: anywhere; /* long paths must not blow out the narrow branch column */
}
.changelog__body pre {
  background: var(--sand-light);
  padding: 12px;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 13px;
}
.changelog__empty { color: var(--text-muted); font-style: italic; }

/* ── Roadmap collab CTA ───────────────────────────────── */
.collab-cta {
  margin-top: 60px;
  padding: 40px;
  background: var(--sand-light);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  text-align: center;
}

.collab-cta h2 {
  font-size: 24px;
  color: var(--brown);
  margin-bottom: 12px;
}

.collab-cta p {
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 auto 24px;
  font-size: 15px;
  line-height: 1.65;
}

.collab-cta__actions { display: flex; gap: 12px; justify-content: center; }

/* ── Download cards (Desktop + Mobile) ────────────────── */
.download-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 1100px;
  margin: 0 auto;
  align-items: stretch; /* equal card height so CTAs can line up */
}

.download-card {
  background: var(--white);
  border: 2px solid var(--brown-mid);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

/* Push the CTA to the bottom so both download buttons align regardless of
   how much content (demo notice, feature count) sits above them. */
.download-card .btn--lg { margin-top: auto; }

.download-card__header {
  display: flex;
  align-items: center;
  gap: 16px;
}

.download-card__icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--sand-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.download-card__icon i { font-size: 28px; color: var(--brown-mid); }

.download-card__header h2 {
  font-size: 22px;
  color: var(--brown);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.download-card__badge {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--white);
  background: var(--warn);
  padding: 2px 9px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Demo badge uses accent (deep blue) to read as "illustrative", not "early/risky" like terracotta alpha. */
.download-card__badge--demo {
  background: var(--accent);
}

.download-card__meta {
  font-size: 13px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Demo notice — sets expectation that mobile is illustrative, not a second product. */
.download-card__demo {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--text);
  background: rgba(var(--accent-rgb), 0.07);
  border: 1px solid rgba(var(--accent-rgb), 0.18);
  border-radius: 8px;
  padding: 12px 14px;
}
.download-card__demo i {
  color: var(--accent);
  font-size: 18px;
  flex-shrink: 0;
  margin-top: 1px;
}

.download-card__video {
  position: relative;
  width: 100%;
  aspect-ratio: 1920 / 1040;
  background: var(--dark);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  padding: 0;
  cursor: pointer;
  display: block;
  transition: transform 0.2s, box-shadow 0.2s;
}

.download-card__video:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(42,31,18,0.18);
}

.download-card__video:focus-visible {
  outline: 2px solid var(--brown-mid);
  outline-offset: 2px;
}

.download-card__video video {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  pointer-events: none;
}

.download-card__video-expand {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(42, 31, 18, 0.75);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  backdrop-filter: blur(4px);
  transition: background 0.2s, transform 0.2s;
  pointer-events: none;
}

.download-card__video:hover .download-card__video-expand {
  background: var(--brown);
  transform: scale(1.08);
}

/* ── Video modal (lightbox) ───────────────────────────── */
.video-modal {
  border: none;
  padding: 0;
  background: transparent;
  width: min(880px, 92vw);
  max-width: 92vw;
  max-height: 88vh;
  margin: auto;
  color: var(--white);
  overflow: visible;
}

.video-modal::backdrop {
  background: rgba(20, 14, 8, 0.78);
  backdrop-filter: blur(4px);
}

.video-modal__inner {
  position: relative;
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
  border: 1px solid rgba(212, 196, 160, 0.18);
}

.video-modal__title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--sand);
  background: rgba(20, 14, 8, 0.92);
  padding: 10px 16px;
  margin: 0;
  border-bottom: 1px solid rgba(212, 196, 160, 0.15);
}

.video-modal__video {
  display: block;
  width: 100%;
  max-height: calc(82vh - 40px);
  background: #000;
  object-fit: contain;
}

.video-modal__close {
  position: absolute;
  top: -16px;
  right: -16px;
  z-index: 3;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: var(--white);
  color: var(--brown);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: 0 4px 14px rgba(0,0,0,0.4);
  transition: transform 0.2s, background 0.2s;
}

.video-modal__close:hover { background: var(--sand); transform: rotate(90deg); }

@media (max-width: 600px) {
  .video-modal { width: 94vw; }
  .video-modal__close { top: -12px; right: -4px; }
}

.download-card__features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
}

.download-card__features li {
  font-size: 14px;
  color: var(--text-muted);
}

.download-card .btn { align-self: stretch; text-align: center; }

.download-card__note {
  font-size: 13px;
  color: var(--text-muted);
}

.download-card__note a { word-break: break-all; }

/* ── Steps ────────────────────────────────────────────── */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.step {
  text-align: center;
  padding: 28px 20px;
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.step__num {
  display: flex;
  width: 44px;
  height: 44px;
  background: var(--brown);
  color: var(--white);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 18px;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
}

.step h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--brown);
  margin-bottom: 8px;
}

.step p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── Feature card icon (Phosphor) ─────────────────────── */
.feature-card__icon i {
  font-size: 32px;
  color: var(--brown-mid);
}

/* ── Footer ───────────────────────────────────────────── */
.footer { background: var(--dark); padding: 56px 0 32px; }

.footer__top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(212,196,160,0.15);
  margin-bottom: 24px;
}

.footer__brand .nav__logo { color: var(--sand); font-size: 22px; }
.footer__brand p {
  font-size: 14px;
  color: rgba(212,196,160,0.55);
  margin-top: 8px;
  line-height: 1.7;
}

.footer__nav h4,
.footer__contacts h4 {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--sand-dark);
  margin-bottom: 14px;
}

.footer__nav ul,
.footer__contacts ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer__nav a,
.footer__contacts a {
  font-size: 14px;
  color: rgba(212,196,160,0.6);
  display: flex;
  align-items: center;
  gap: 7px;
  transition: color 0.2s;
}

.footer__nav a:hover,
.footer__contacts a:hover { color: var(--sand); }

.footer__contacts i { font-size: 15px; opacity: 0.7; }

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer__bottom p {
  font-size: 12px;
  color: rgba(212,196,160,0.35);
}

@media (max-width: 900px) {
  .footer__top { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 600px) {
  .footer__top { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; gap: 6px; text-align: center; }
}

/* ── Responsive ───────────────────────────────────────── */
@media (max-width: 900px) {
  .about__grid,
  .features__grid,
  .features__grid--3,
  .roadmap__grid,
  .collab__grid,
  .steps,
  .screenshot-feature,
  .mobile__grid,
  .team__grid,
  .download-grid { grid-template-columns: 1fr 1fr; }

  .mobile__grid { gap: 32px; }

  .screenshot-feature--reverse .screenshot-feature__img { order: 0; }
  .screenshot-feature--reverse .screenshot-feature__text { order: 0; }
}

@media (max-width: 600px) {
  .nav__burger { display: flex; }

  .nav__links {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: rgba(253,250,245,0.97);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    gap: 0;
    padding: 8px 0 12px;
    z-index: 99;
  }

  .nav--open .nav__links { display: flex; }

  .nav__links li { width: 100%; }

  .nav__links a {
    display: block;
    padding: 10px 24px;
    font-size: 16px;
  }

  .nav__links .btn {
    margin: 8px 24px 0;
    display: block;
    text-align: center;
  }

  .hero__title { font-size: 36px; }
  .hero__actions { flex-direction: column; }
  .section { padding: 56px 0; }

  .about__grid,
  .features__grid,
  .features__grid--3,
  .roadmap__grid,
  .screenshots__grid,
  .collab__grid,
  .steps,
  .screenshot-feature,
  .mobile__grid,
  .team__grid,
  .download-grid { grid-template-columns: 1fr; }

  .screenshot-feature--reverse .screenshot-feature__img { order: 0; }
  .screenshot-feature--reverse .screenshot-feature__text { order: 0; }

  .mobile__visual { order: -1; }
  .mobile__actions { flex-direction: column; align-items: stretch; }

  .collab-cta__actions { flex-direction: column; align-items: stretch; }
  .download-card { padding: 24px; }
  .collab-cta { padding: 28px 20px; }
}


/* ==========================================================================
   Helper classes
   ========================================================================== */

/*
 * Hide visually and from screen readers
 */

.hidden,
[hidden] {
  display: none !important;
}

/*
 * Hide only visually, but have it available for screen readers:
 * https://snook.ca/archives/html_and_css/hiding-content-for-accessibility
 *
 * 1. For long content, line feeds are not interpreted as spaces and small width
 *    causes content to wrap 1 word per line:
 *    https://medium.com/@jessebeach/beware-smushed-off-screen-accessible-text-5952a4c2cbfe
 */

.visually-hidden {
  border: 0;
  clip: rect(0, 0, 0, 0);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  white-space: nowrap;
  width: 1px;
  /* 1 */
}

/*
 * Extends the .visually-hidden class to allow the element
 * to be focusable when navigated to via the keyboard:
 * https://www.drupal.org/node/897638
 */

.visually-hidden.focusable:active,
.visually-hidden.focusable:focus {
  clip: auto;
  height: auto;
  margin: 0;
  overflow: visible;
  position: static;
  white-space: inherit;
  width: auto;
}

/*
 * Hide visually and from screen readers, but maintain layout
 */

.invisible {
  visibility: hidden;
}

/*
 * Clearfix: contain floats
 *
 * The use of `table` rather than `block` is only necessary if using
 * `::before` to contain the top-margins of child elements.
 */

.clearfix::before,
.clearfix::after {
  content: "";
  display: table;
}

.clearfix::after {
  clear: both;
}

/* ==========================================================================
   EXAMPLE Media Queries for Responsive Design.
   These examples override the primary ('mobile first') styles.
   Modify as content requires.
   ========================================================================== */

@media only screen and (min-width: 35em) {
  /* Style adjustments for viewports that meet the condition */
}

@media print,
  (-webkit-min-device-pixel-ratio: 1.25),
  (min-resolution: 1.25dppx),
  (min-resolution: 120dpi) {
  /* Style adjustments for high resolution devices */
}

/* ==========================================================================
   Print styles.
   Inlined to avoid the additional HTTP request:
   https://www.phpied.com/delay-loading-your-print-css/
   ========================================================================== */

@media print {
  *,
  *::before,
  *::after {
    background: #fff !important;
    color: #000 !important;
    /* Black prints faster */
    box-shadow: none !important;
    text-shadow: none !important;
  }

  a,
  a:visited {
    text-decoration: underline;
  }

  a[href]::after {
    content: " (" attr(href) ")";
  }

  abbr[title]::after {
    content: " (" attr(title) ")";
  }

  /*
   * Don't show links that are fragment identifiers,
   * or use the `javascript:` pseudo protocol
   */
  a[href^="#"]::after,
  a[href^="javascript:"]::after {
    content: "";
  }

  pre {
    white-space: pre-wrap !important;
  }

  pre,
  blockquote {
    border: 1px solid #999;
    page-break-inside: avoid;
  }

  tr,
  img {
    page-break-inside: avoid;
  }

  p,
  h2,
  h3 {
    orphans: 3;
    widows: 3;
  }

  h2,
  h3 {
    page-break-after: avoid;
  }
}