/* ===========================================================
   Synapsi — shared stylesheet
   Palette and chrome mirror the Synapsi desktop application.
   =========================================================== */

:root {
  /* Surfaces */
  --bg:          #0a0d12;
  --surface:     #0f141c;
  --panel:       #121924;
  --card:        #141c28;
  --card-hover:  #18222f;

  /* Lines */
  --line:        #1e2a38;
  --line-soft:   #17212c;

  /* Text */
  --text:        #e8eef6;
  --text-dim:    #93a3b5;
  --text-faint:  #617184;

  /* Accents */
  --cyan:        #4cc2f1;
  --blue:        #3b82f6;
  --indigo:      #4f6ef7;
  --accent-glow: rgba(76, 194, 241, 0.14);

  /* Geometry */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-pill: 999px;

  --maxw: 1180px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(900px 500px at 50% -10%, rgba(59, 130, 246, 0.10), transparent 65%),
    var(--bg);
  color: var(--text);
  font-family: "Outfit", "Avenir Next", "Century Gothic", -apple-system,
               BlinkMacSystemFont, "Segoe UI Variable Display", "Segoe UI",
               system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--cyan); text-decoration: none; }
a:hover { color: #7ad4f7; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ----------------------------- Top bar ----------------------------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(15, 20, 28, 0.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.topbar-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--text);
  font-weight: 600;
  font-size: 1.4rem;
  letter-spacing: -0.01em;
  margin-right: auto;
}
.brand:hover { color: var(--text); }
.brand .wordmark {
  background: linear-gradient(120deg, var(--cyan), var(--indigo));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.brand .mark {
  display: block;
  height: 30px;
  width: auto;
  flex: none;
}

.nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav a {
  color: var(--text-dim);
  font-size: 0.92rem;
  font-weight: 500;
  padding: 8px 15px;
  border-radius: var(--r-pill);
  border: 1px solid transparent;
  transition: background 0.18s, color 0.18s, border-color 0.18s;
}
.nav a:hover {
  color: var(--text);
  background: var(--card);
  border-color: var(--line);
}
.nav a.active {
  color: var(--cyan);
  background: var(--accent-glow);
  border-color: rgba(76, 194, 241, 0.32);
}

/* ----------------------------- Layout ----------------------------- */

main {
  flex: 1;
  max-width: var(--maxw);
  width: 100%;
  margin: 0 auto;
  padding: 0 24px 96px;
}

.section { padding-top: 72px; }

.eyebrow {
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", "Cascadia Mono",
               Consolas, "DejaVu Sans Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin: 0 0 14px;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.08;
  margin: 0 0 16px;
}

h2 {
  font-size: 1.7rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}

h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}

.lead {
  color: var(--text-dim);
  font-size: 1.1rem;
  max-width: 620px;
  margin: 0 0 32px;
}

.sub {
  color: var(--text-dim);
  margin: 0 0 36px;
  max-width: 640px;
}

/* ----------------------------- Hero ----------------------------- */

.hero {
  padding: 96px 0 24px;
  text-align: center;
}
.hero .lead { margin-left: auto; margin-right: auto; }

.cta-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ----------------------------- Buttons ----------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 22px;
  border-radius: var(--r-pill);
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--text);
  transition: transform 0.16s, background 0.18s, border-color 0.18s;
}
.btn:hover {
  background: var(--card-hover);
  border-color: #2b3a4c;
  color: var(--text);
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--cyan), var(--indigo));
  border-color: transparent;
  color: #05090f;
}
.btn-primary:hover {
  color: #05090f;
  filter: brightness(1.08);
}

/* ----------------------------- Stat cards ----------------------------- */

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 56px;
}

.stat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 20px;
  text-align: left;
  position: relative;
}
.stat .num {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
}
.stat .label {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-top: 8px;
}
.stat .stat-key {
  position: absolute;
  top: 20px;
  right: 20px;
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", "Cascadia Mono",
               Consolas, "DejaVu Sans Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
  opacity: 0.7;
}

/* ----------------------------- App cards ----------------------------- */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

.app-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}
.app-card:hover {
  border-color: rgba(76, 194, 241, 0.34);
  background: var(--card-hover);
  transform: translateY(-2px);
}

.app-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.tag {
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", "Cascadia Mono",
               Consolas, "DejaVu Sans Mono", monospace;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--r-pill);
  background: var(--accent-glow);
  border: 1px solid rgba(76, 194, 241, 0.3);
  color: var(--cyan);
  white-space: nowrap;
}
.tag-muted {
  background: rgba(147, 163, 181, 0.08);
  border-color: var(--line);
  color: var(--text-dim);
}

.app-card p {
  color: var(--text-dim);
  font-size: 0.94rem;
  margin: 0 0 20px;
  flex: 1;
}

.meta {
  display: flex;
  gap: 16px;
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", "Cascadia Mono",
               Consolas, "DejaVu Sans Mono", monospace;
  font-size: 0.74rem;
  color: var(--text-dim);
  padding-top: 16px;
  margin-top: auto;
  border-top: 1px solid var(--line-soft);
}

.dl-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

/* ----------------------------- Feature list ----------------------------- */

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.feature {
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  padding: 22px;
}
.feature p {
  color: var(--text-dim);
  font-size: 0.92rem;
  margin: 0;
}
.feature .icon {
  color: var(--cyan);
  margin-bottom: 12px;
  display: block;
}

/* ----------------------------- Form ----------------------------- */

.form-wrap {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 32px;
  max-width: 760px;
}

.field { margin-bottom: 22px; }

.field label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 7px;
}

.field .hint {
  display: block;
  font-size: 0.82rem;
  color: var(--text-dim);
  font-weight: 400;
  margin-bottom: 8px;
}

input[type="text"],
input[type="email"],
select,
textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
  padding: 12px 14px;
  transition: border-color 0.18s, box-shadow 0.18s;
}
input::placeholder, textarea::placeholder { color: #55657a; }

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

textarea { resize: vertical; min-height: 130px; }

select {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none' stroke='%2393a3b5' stroke-width='1.8'%3E%3Cpath d='M1 1.5 6 6.5 11 1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 38px;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.checks {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
}

.check {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 11px 14px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: border-color 0.18s, background 0.18s;
}
.check:hover { border-color: #2b3a4c; background: var(--card); }
.check input { accent-color: var(--cyan); width: 16px; height: 16px; cursor: pointer; }

.form-note {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-top: 18px;
}

/* Honeypot */
.hp { position: absolute; left: -9999px; opacity: 0; }

/* ----------------------------- Footer ----------------------------- */

footer {
  border-top: 1px solid var(--line);
  background: var(--surface);
  padding: 28px 24px;
}
.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--text-dim);
  font-size: 0.87rem;
}
.footer-links { display: flex; gap: 20px; }
.footer-links a { color: var(--text-dim); }
.footer-links a:hover { color: var(--cyan); }

/* ----------------------------- Responsive ----------------------------- */

@media (max-width: 860px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .topbar-inner { padding: 12px 16px; gap: 12px; flex-wrap: wrap; }
  .brand { font-size: 1.2rem; }
  .brand .mark { height: 26px; }
  .nav { width: 100%; justify-content: flex-start; overflow-x: auto; }
  .nav a { padding: 7px 12px; font-size: 0.86rem; }
  main { padding: 0 16px 64px; }
  .hero { padding: 56px 0 16px; }
  .section { padding-top: 52px; }
  .field-row { grid-template-columns: 1fr; }
  .form-wrap { padding: 22px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto; }
}

/* ===========================================================
   Additions: docs, changelog, about, privacy, contact, gallery
   =========================================================== */

/* ----------------------------- Prose ----------------------------- */

.prose { max-width: 700px; }
.prose p { color: var(--text-dim); margin: 0 0 16px; }
.prose h3 { margin-top: 30px; color: var(--text); }
.prose ul, .prose ol { color: var(--text-dim); padding-left: 22px; margin: 0 0 16px; }
.prose li { margin-bottom: 8px; }
.prose strong { color: var(--text); font-weight: 600; }
.prose code {
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", "Cascadia Mono",
               Consolas, "DejaVu Sans Mono", monospace;
  font-size: 0.85em;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 2px 6px;
  color: var(--cyan);
}

/* ----------------------------- Docs layout ----------------------------- */

.docs-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 44px;
  align-items: start;
}

.docs-nav {
  position: sticky;
  top: 92px;
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  padding: 16px;
}
.docs-nav p.eyebrow { margin-bottom: 10px; }
.docs-nav a {
  display: block;
  color: var(--text-dim);
  font-size: 0.9rem;
  padding: 7px 10px;
  border-radius: var(--r-sm);
  transition: background 0.16s, color 0.16s;
}
.docs-nav a:hover { background: var(--card); color: var(--text); }

.doc-block {
  border-top: 1px solid var(--line-soft);
  padding-top: 34px;
  margin-top: 34px;
}
.doc-block:first-of-type { border-top: none; padding-top: 0; margin-top: 0; }

/* ----------------------------- FAQ ----------------------------- */

details.faq {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 0;
  margin-bottom: 10px;
  overflow: hidden;
}
details.faq summary {
  cursor: pointer;
  padding: 15px 18px;
  font-weight: 500;
  font-size: 0.95rem;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: center;
}
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::after {
  content: "+";
  color: var(--cyan);
  font-size: 1.2rem;
  line-height: 1;
  flex-shrink: 0;
}
details.faq[open] summary::after { content: "−"; }
details.faq summary:hover { background: var(--card-hover); }
details.faq .faq-body {
  padding: 0 18px 18px;
  color: var(--text-dim);
  font-size: 0.93rem;
}
details.faq .faq-body p { margin: 0 0 12px; }
details.faq .faq-body p:last-child { margin-bottom: 0; }

/* ----------------------------- Changelog ----------------------------- */

.release {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 28px;
  padding: 28px 0;
  border-top: 1px solid var(--line-soft);
}
.release:first-of-type { border-top: none; padding-top: 0; }

.release-meta {
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", "Cascadia Mono",
               Consolas, "DejaVu Sans Mono", monospace;
  font-size: 0.78rem;
  color: var(--text-dim);
}
.release-meta .ver {
  display: inline-block;
  color: var(--cyan);
  font-size: 0.88rem;
  margin-bottom: 6px;
}
.release-meta .app {
  display: block;
  color: var(--text);
  font-family: "Outfit", "Avenir Next", "Century Gothic", system-ui, sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.release-body ul { margin: 0; padding-left: 20px; color: var(--text-dim); font-size: 0.94rem; }
.release-body li { margin-bottom: 7px; }

.chip {
  display: inline-block;
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", "Cascadia Mono",
               Consolas, "DejaVu Sans Mono", monospace;
  font-size: 0.66rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: var(--r-pill);
  margin-right: 8px;
  border: 1px solid var(--line);
  color: var(--text-dim);
  background: rgba(147,163,181,0.06);
}
.chip-new   { color: #5ee6a8; border-color: rgba(94,230,168,0.3); background: rgba(94,230,168,0.08); }
.chip-fix   { color: var(--cyan); border-color: rgba(76,194,241,0.3); background: var(--accent-glow); }
.chip-break { color: #f7a55e; border-color: rgba(247,165,94,0.3); background: rgba(247,165,94,0.08); }

/* ----------------------------- Screenshots ----------------------------- */

.shot {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  margin-bottom: 18px;
}
.shot img { width: 100%; display: block; }
.shot .placeholder {
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    repeating-linear-gradient(45deg, var(--panel) 0 12px, var(--card) 12px 24px);
  color: var(--text-dim);
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", "Cascadia Mono",
               Consolas, "DejaVu Sans Mono", monospace;
  font-size: 0.8rem;
  text-align: center;
  padding: 20px;
}
.shot .caption {
  padding: 14px 18px;
  border-top: 1px solid var(--line-soft);
  font-size: 0.88rem;
  color: var(--text-dim);
}
.shot .caption strong { color: var(--text); font-weight: 600; }

/* ----------------------------- Contact ----------------------------- */

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
}
.contact-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 22px;
}
.contact-card p { color: var(--text-dim); font-size: 0.92rem; margin: 0 0 14px; }
.contact-card .addr {
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", "Cascadia Mono",
               Consolas, "DejaVu Sans Mono", monospace;
  font-size: 0.9rem;
  color: var(--cyan);
  word-break: break-all;
}

/* ----------------------------- Responsive ----------------------------- */

@media (max-width: 900px) {
  .docs-layout { grid-template-columns: 1fr; gap: 24px; }
  .docs-nav { position: static; }
  .release { grid-template-columns: 1fr; gap: 12px; }
}

/* ----------------------------- Pricing & platform ----------------------------- */

.price {
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", "Cascadia Mono",
               Consolas, "DejaVu Sans Mono", monospace;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.01em;
}
.price .once {
  display: block;
  font-family: "Outfit", "Avenir Next", "Century Gothic", system-ui, sans-serif;
  font-size: 0.76rem;
  color: var(--text-dim);
  letter-spacing: 0;
  margin-top: 2px;
}
.price-free { color: #5ee6a8; }

.plat {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", "Cascadia Mono",
               Consolas, "DejaVu Sans Mono", monospace;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 9px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  color: var(--text-dim);
  background: rgba(147, 163, 181, 0.06);
  white-space: nowrap;
}
.plat-mac   { color: #b8a4f0; border-color: rgba(184,164,240,0.28); background: rgba(184,164,240,0.08); }
.plat-win   { color: var(--cyan); border-color: rgba(76,194,241,0.28); background: var(--accent-glow); }
.plat-linux { color: #f7c05e; border-color: rgba(247,192,94,0.28); background: rgba(247,192,94,0.08); }

.card-foot {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px;
  padding-top: 16px;
  margin-top: auto;
  border-top: 1px solid var(--line-soft);
}

.plat-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.filter-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 26px;
}
.filter-row button {
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--text-dim);
  cursor: pointer;
  transition: color 0.16s, border-color 0.16s, background 0.16s;
}
.filter-row button:hover { color: var(--text); border-color: #2b3a4c; }
.filter-row button[aria-pressed="true"] {
  color: var(--cyan);
  background: var(--accent-glow);
  border-color: rgba(76, 194, 241, 0.32);
}