/* WinStellar - site vitrine
   Palette: docstellar-like dark theme
   --------------------------------- */

:root {
  --bg: #0b0d10;
  --panel: #13161b;
  --panel-2: #181c22;
  --border: #222831;
  --border-strong: #2a3340;
  --text: #e6e8eb;
  --muted: #8b95a1;
  --muted-2: #6b7480;
  --accent: #7dd3fc;
  --accent-2: #38bdf8;
  --accent-soft: #7dd3fc26;
  --danger: #ef4444;

  --radius: 14px;
  --radius-lg: 22px;
  --maxw: 1180px;

  --shadow-1: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 0 1px rgba(125, 211, 252, 0.18), 0 0 40px -8px rgba(125, 211, 252, 0.35);

  --font-sans: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, "Liberation Mono", "Courier New", monospace;
}

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

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  line-height: 1.55;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
code { font-family: var(--font-mono); font-size: 0.85em; color: var(--muted); }

a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }

::selection { background: var(--accent); color: #051018; }

/* ---------- Backgrounds ---------- */

#stars {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.bg-glow {
  position: fixed;
  inset: -10% -10% auto -10%;
  height: 90vh;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(60% 50% at 50% 0%, rgba(125, 211, 252, 0.18), transparent 70%),
    radial-gradient(35% 40% at 80% 20%, rgba(125, 211, 252, 0.08), transparent 70%);
  filter: blur(8px);
}

main, .nav, .footer { position: relative; z-index: 1; }

/* ---------- Nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 28px;
  max-width: var(--maxw);
  margin: 0 auto;
  transition: padding 0.25s ease;
}

.nav::before {
  content: "";
  position: absolute;
  inset: 8px 12px;
  border-radius: 999px;
  background: rgba(11, 13, 16, 0.55);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border: 1px solid transparent;
  opacity: 0;
  transition: opacity 0.25s ease, border-color 0.25s ease;
  z-index: -1;
}

.nav.is-scrolled { padding: 10px 28px; }
.nav.is-scrolled::before {
  opacity: 1;
  border-color: var(--border);
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  letter-spacing: -0.01em;
  font-size: 1.02rem;
}
.nav__brand img {
  width: 32px;
  height: 32px;
  filter: drop-shadow(0 0 12px rgba(125, 211, 252, 0.35));
}

.nav__links {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.92rem;
}
.nav__links a {
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--muted);
  transition: color 0.15s ease, background 0.15s ease;
}
.nav__links a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}
.nav__links .nav__ext {
  color: var(--accent);
}

@media (max-width: 720px) {
  .nav { padding: 14px 18px; }
  .nav__links { gap: 0; }
  .nav__links a { padding: 8px 8px; font-size: 0.85rem; }
}
@media (max-width: 480px) {
  .nav__links a:not(.nav__ext) { display: none; }
}

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

.hero {
  position: relative;
  min-height: calc(100vh - 60px);
  display: grid;
  place-items: center;
  padding: 64px 24px 80px;
}

.hero__inner {
  max-width: 860px;
  text-align: center;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(19, 22, 27, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--muted);
  font-size: 0.82rem;
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
}
.hero__badge .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.8); }
}

.hero__title {
  margin: 26px 0 18px;
  font-size: clamp(2.2rem, 5.6vw, 4.2rem);
  line-height: 1.05;
  font-weight: 600;
  letter-spacing: -0.035em;
}
.hero__title .grad {
  background: linear-gradient(120deg, #ffffff 0%, var(--accent) 60%, #38bdf8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__sub {
  max-width: 620px;
  margin: 0 auto;
  font-size: clamp(1rem, 1.3vw, 1.15rem);
  color: var(--muted);
}

.hero__cta {
  margin-top: 32px;
  display: inline-flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.hero__meta {
  margin-top: 22px;
  color: var(--muted-2);
  font-size: 0.85rem;
}
.hero__meta code {
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 6px;
}

.hero__scroll {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  width: 22px;
  height: 36px;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  display: grid;
  place-items: center;
  opacity: 0.7;
}
.hero__scroll span {
  width: 3px;
  height: 7px;
  background: var(--accent);
  border-radius: 3px;
  animation: scrollHint 1.8s ease-in-out infinite;
}
@keyframes scrollHint {
  0% { transform: translateY(-6px); opacity: 0; }
  40% { opacity: 1; }
  100% { transform: translateY(6px); opacity: 0; }
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 18px;
  border-radius: 10px;
  font-weight: 500;
  font-size: 0.94rem;
  letter-spacing: -0.005em;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.15s ease, border-color 0.15s ease, box-shadow 0.2s ease, color 0.15s ease;
  border: 1px solid transparent;
  white-space: nowrap;
  will-change: transform;
}
.btn:active { transform: translateY(1px); }

.btn--primary {
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent-2) 100%);
  color: #051018;
  box-shadow: var(--shadow-glow);
}
.btn--primary:hover {
  color: #051018;
  box-shadow: 0 0 0 1px rgba(125, 211, 252, 0.4), 0 0 56px -6px rgba(125, 211, 252, 0.55);
}

.btn--ghost {
  background: rgba(19, 22, 27, 0.55);
  color: var(--text);
  border-color: var(--border);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.btn--ghost:hover {
  color: var(--text);
  border-color: var(--border-strong);
  background: rgba(24, 28, 34, 0.8);
}

.btn--lg {
  padding: 14px 22px;
  font-size: 1rem;
}

/* ---------- Sections ---------- */

.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 120px 24px 60px;
}

.section__head {
  max-width: 720px;
  margin: 0 auto 56px;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 14px;
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.section h2 {
  margin: 0 0 16px;
  font-size: clamp(1.7rem, 3.2vw, 2.4rem);
  line-height: 1.15;
  font-weight: 600;
  letter-spacing: -0.025em;
}

.section__lead {
  margin: 0;
  color: var(--muted);
  font-size: 1.02rem;
}

/* ---------- Grid + cards ---------- */

.grid {
  display: grid;
  gap: 18px;
}
.grid--features {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
  position: relative;
  padding: 26px;
  background: linear-gradient(180deg, rgba(24, 28, 34, 0.7), rgba(19, 22, 27, 0.7));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
}
.card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: radial-gradient(280px 180px at var(--mx, 50%) var(--my, 0%), rgba(125, 211, 252, 0.08), transparent 60%);
  opacity: 0;
  transition: opacity 0.25s ease;
}
.card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
}
.card:hover::after { opacity: 1; }

.card--highlight {
  border-color: rgba(125, 211, 252, 0.22);
  background:
    linear-gradient(180deg, rgba(125, 211, 252, 0.05), rgba(125, 211, 252, 0.01)),
    linear-gradient(180deg, rgba(24, 28, 34, 0.7), rgba(19, 22, 27, 0.7));
}
.card--highlight:hover {
  border-color: rgba(125, 211, 252, 0.4);
}

.card__icon {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  margin-bottom: 18px;
  border: 1px solid rgba(125, 211, 252, 0.25);
}
.card__icon svg { width: 22px; height: 22px; }

.card h3 {
  margin: 0 0 8px;
  font-size: 1.08rem;
  font-weight: 600;
  letter-spacing: -0.012em;
}
.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* ---------- Screenshot frame ---------- */

.screenshot-frame {
  max-width: 1000px;
  margin: 0 auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(24, 28, 34, 0.8), rgba(13, 16, 20, 0.9));
  overflow: hidden;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.05) inset,
    0 30px 80px -20px rgba(0, 0, 0, 0.7),
    0 0 0 1px rgba(125, 211, 252, 0.06),
    0 0 80px -16px rgba(125, 211, 252, 0.25);
  transform-style: preserve-3d;
  transition: transform 0.2s ease;
}

.screenshot-frame__chrome {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: rgba(19, 22, 27, 0.9);
  border-bottom: 1px solid var(--border);
}
.screenshot-frame__chrome > span:not(.screenshot-frame__title) {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--border-strong);
}
.screenshot-frame__chrome > span:nth-child(1) { background: #ef4444; }
.screenshot-frame__chrome > span:nth-child(2) { background: #f59e0b; }
.screenshot-frame__chrome > span:nth-child(3) { background: #15803d; }
.screenshot-frame__title {
  margin-left: 14px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
}

.screenshot-frame__body {
  aspect-ratio: 16 / 9;
  display: grid;
  place-items: center;
  background:
    radial-gradient(60% 80% at 50% 30%, rgba(125, 211, 252, 0.06), transparent 60%),
    repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.015) 0 2px, transparent 2px 16px),
    #0a0c10;
}
.screenshot-frame__placeholder {
  text-align: center;
  color: var(--muted-2);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}
.screenshot-frame__placeholder img {
  margin: 0 auto 14px;
  opacity: 0.55;
  filter: drop-shadow(0 0 20px rgba(125, 211, 252, 0.4));
}

@media (max-width: 720px) {
  .screenshot-frame__title { display: none; }
}

/* ---------- Download card ---------- */

.section--download { padding-top: 80px; padding-bottom: 120px; }

.download-card {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 36px;
  align-items: center;
  padding: 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(60% 80% at 90% 0%, rgba(125, 211, 252, 0.12), transparent 60%),
    linear-gradient(180deg, rgba(24, 28, 34, 0.8), rgba(19, 22, 27, 0.8));
  box-shadow: var(--shadow-1);
  position: relative;
  overflow: hidden;
}
.download-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(125, 211, 252, 0.35), transparent 50%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.download-card .eyebrow { margin-bottom: 12px; }
.download-card h2 {
  margin: 0 0 12px;
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.022em;
}
.download-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

.download-card__cta {
  text-align: right;
}
.download-card__meta {
  margin-top: 12px !important;
  color: var(--muted-2);
  font-size: 0.82rem;
}
.download-card__meta code {
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 6px;
}

@media (max-width: 760px) {
  .download-card {
    grid-template-columns: 1fr;
    padding: 28px;
    text-align: left;
  }
  .download-card__cta { text-align: left; }
}

.release-size {
  color: var(--muted-2);
  font-family: var(--font-mono);
}

/* ---------- Changelog (dépliable) ---------- */

.changelog {
  max-width: 1000px;
  margin: 28px auto 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(24, 28, 34, 0.6), rgba(19, 22, 27, 0.6));
  overflow: hidden;
}
.changelog summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 22px;
  cursor: pointer;
  list-style: none;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: -0.005em;
  user-select: none;
  transition: background 0.15s ease;
}
.changelog summary::-webkit-details-marker { display: none; }
.changelog summary:hover { background: rgba(255, 255, 255, 0.025); }
.changelog__label { color: var(--text); }
.changelog__ver {
  margin-left: 4px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  background: rgba(125, 211, 252, 0.08);
  border: 1px solid rgba(125, 211, 252, 0.22);
  padding: 2px 8px;
  border-radius: 999px;
}
.changelog__ver:empty { display: none; }
.changelog__chevron {
  margin-left: auto;
  color: var(--muted);
  transition: transform 0.2s ease;
}
.changelog[open] .changelog__chevron { transform: rotate(180deg); }

.changelog__body {
  padding: 4px 22px 22px;
  color: var(--muted);
  font-size: 0.94rem;
  border-top: 1px solid var(--border);
}
.changelog__body h1,
.changelog__body h2,
.changelog__body h3 {
  margin: 18px 0 10px;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--text);
}
.changelog__body h1 { font-size: 1.15rem; }
.changelog__body h2 { font-size: 1.02rem; }
.changelog__body h3 { font-size: 0.95rem; color: var(--accent); }
.changelog__body p { margin: 0 0 12px; }
.changelog__body ul,
.changelog__body ol { margin: 0 0 14px; padding-left: 22px; }
.changelog__body li { margin: 4px 0; }
.changelog__body code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 1px 6px;
  border-radius: 5px;
  color: var(--text);
}
.changelog__body pre {
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 12px 14px;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 0.82rem;
  white-space: pre-wrap;
}
.changelog__body a { color: var(--accent); }
.changelog__body a:hover { text-decoration: underline; }
.changelog__body hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 18px 0;
}

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

.footer {
  border-top: 1px solid var(--border);
  margin-top: 40px;
  padding: 40px 24px;
  background: rgba(11, 13, 16, 0.6);
}
.footer__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 28px;
  align-items: center;
}
.footer__brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.footer__name {
  margin: 0;
  font-weight: 600;
  font-size: 0.95rem;
}
.footer__tag {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
}
.footer__links {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  justify-content: center;
  font-size: 0.88rem;
  color: var(--muted);
}
.footer__links a:hover { color: var(--text); }
.footer__copy {
  margin: 0;
  color: var(--muted-2);
  font-size: 0.8rem;
  font-family: var(--font-mono);
  text-align: right;
}

@media (max-width: 760px) {
  .footer__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .footer__brand { justify-content: center; }
  .footer__copy { text-align: center; }
}

/* ---------- Scroll reveal ---------- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1);
  will-change: transform, opacity;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero__scroll span,
  .hero__badge .dot { animation: none; }
}