/* flashpod landing page — pure CSS, no build step */

:root {
  --bg:        #0e0f13;
  --bg-soft:   #15171d;
  --panel:     #1b1e26;
  --border:    #2a2e3a;
  --text:      #e7e9ee;
  --muted:     #a0a6b4;
  --accent:    #ff7a18;   /* "flash" amber */
  --accent-2:  #ffb347;
  --link:      #ffd29a;
  --green:     #6ee7a8;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --maxw: 1080px;
  --radius: 14px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(255,122,24,0.12), transparent 60%),
    radial-gradient(900px 500px at -10% 10%, rgba(110,231,168,0.06), transparent 55%),
    var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }

code {
  font-family: var(--mono);
  font-size: 0.9em;
  background: rgba(255,255,255,0.07);
  padding: 0.1em 0.4em;
  border-radius: 6px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem clamp(1rem, 4vw, 2.5rem);
  background: rgba(14,15,19,0.72);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 0.6rem; color: var(--text); font-weight: 700; }
.brand:hover { text-decoration: none; }
.brand-wheel {
  width: 22px; height: 22px; border-radius: 50%;
  background: conic-gradient(var(--accent), var(--accent-2), var(--accent));
  box-shadow: inset 0 0 0 6px var(--bg), inset 0 0 0 7px var(--border);
}
.brand-name { letter-spacing: 0.3px; font-size: 1.1rem; }
.site-nav { display: flex; align-items: center; gap: clamp(0.6rem, 2vw, 1.6rem); }
.site-nav a { color: var(--muted); font-size: 0.95rem; }
.site-nav a:hover { color: var(--text); text-decoration: none; }
.nav-gh { color: var(--text) !important; font-weight: 600; }

/* ---------- Layout helpers ---------- */
main { display: block; }
section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(3rem, 8vw, 6rem) clamp(1rem, 4vw, 2rem);
}
.section-title {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  margin: 0 0 1.5rem;
  letter-spacing: -0.02em;
}

/* ---------- Hero ---------- */
.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  padding-top: clamp(3rem, 7vw, 5rem);
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  color: var(--accent-2);
  margin: 0 0 0.8rem;
  font-weight: 700;
}
.hero h1 {
  font-size: clamp(2.4rem, 6vw, 3.8rem);
  line-height: 1.05;
  margin: 0 0 1.2rem;
  letter-spacing: -0.03em;
}
.lede { font-size: clamp(1.05rem, 2vw, 1.2rem); color: var(--muted); max-width: 38ch; }
.lede strong { color: var(--text); }
.hero-cta { display: flex; flex-wrap: wrap; gap: 0.8rem; margin: 1.8rem 0 1rem; }
.hero-meta { color: var(--muted); font-size: 0.85rem; }

.btn {
  display: inline-block;
  padding: 0.7rem 1.3rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.98rem;
  border: 1px solid transparent;
  transition: transform 0.08s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary {
  background: linear-gradient(180deg, var(--accent-2), var(--accent));
  color: #2a1500;
}
.btn-ghost { border-color: var(--border); color: var(--text); background: var(--panel); }
.btn-ghost:hover { border-color: var(--accent); }

/* ---------- Hero iPod art ---------- */
.hero-art { display: flex; justify-content: center; }
.hero-ipod {
  width: 100%;
  max-width: 280px;
  height: auto;
  border-radius: 18px;
  filter: drop-shadow(0 30px 60px rgba(0,0,0,0.5));
}

/* ---------- Features ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
  transition: border-color 0.15s ease, transform 0.1s ease;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card h3 { margin: 0 0 0.5rem; font-size: 1.1rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.95rem; }

/* ---------- Terminal demo ---------- */
.demo { display: grid; gap: 2rem; }
.demo-copy p { color: var(--muted); max-width: 60ch; }
.terminal {
  background: #0b0c10;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0,0,0,0.45);
}
.terminal-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 0.6rem 0.9rem;
  background: #14161c;
  border-bottom: 1px solid var(--border);
}
.dot { width: 11px; height: 11px; border-radius: 50%; display: inline-block; }
.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }
.terminal-title { margin-left: 8px; color: var(--muted); font-size: 0.8rem; font-family: var(--mono); }
.terminal-body {
  margin: 0;
  padding: 1.2rem;
  font-family: var(--mono);
  font-size: 0.84rem;
  line-height: 1.6;
  color: #d3d7e0;
  overflow-x: auto;
  white-space: pre;
}
.terminal-body .p { color: var(--accent-2); }
.terminal-body .c { color: #fff; }
.terminal-body .o { color: var(--accent); font-weight: 600; }
.terminal-body .g { color: var(--green); }

/* ---------- Screenshots ---------- */
.shots-note { color: var(--muted); font-size: 0.9rem; margin-top: -0.8rem; }
.shot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}
.shot { margin: 0; }
.shot img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-soft);
}
.shot figcaption { color: var(--muted); font-size: 0.85rem; margin-top: 0.5rem; text-align: center; }

/* ---------- Install (pure-CSS tabs) ---------- */
.install-intro, .install-note { color: var(--muted); max-width: 60ch; }

.install-method {
  margin: 1.5rem 0;
  padding: 1.4rem 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-soft);
}
.install-method > p { color: var(--muted); max-width: 60ch; }
.install-primary {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), 0 18px 40px rgba(0,0,0,0.35);
}
.method-head {
  display: flex; align-items: center; gap: 0.7rem;
  margin-bottom: 0.6rem;
}
.method-head h3 { margin: 0; font-size: 1.15rem; }
.method-badge {
  font-size: 0.7rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.05em;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: var(--accent); color: #1a1206;
  white-space: nowrap;
}
.method-badge-alt { background: var(--panel); color: var(--muted); border: 1px solid var(--border); }
.method-aside { font-size: 0.9rem; }
.install-steps { color: var(--muted); max-width: 60ch; padding-left: 1.3rem; }
.install-steps li { margin: 0.35rem 0; }
.install-method .tabs { margin-bottom: 0; }

.tabs { margin: 1.5rem 0; }
.tabs > input[type="radio"] { position: absolute; opacity: 0; pointer-events: none; }
.tab-labels { display: flex; gap: 0.4rem; flex-wrap: wrap; margin-bottom: -1px; }
.tab-labels label {
  cursor: pointer;
  padding: 0.55rem 1.1rem;
  border: 1px solid var(--border);
  border-bottom: none;
  border-radius: 10px 10px 0 0;
  background: var(--bg-soft);
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 600;
}
.tab-panel { display: none; }
.tab-panels {
  border: 1px solid var(--border);
  border-radius: 0 var(--radius) var(--radius) var(--radius);
  background: #0b0c10;
}
#tab-linux:checked ~ .tab-labels label[for="tab-linux"],
#tab-macos:checked ~ .tab-labels label[for="tab-macos"],
#tab-win:checked   ~ .tab-labels label[for="tab-win"] {
  background: #0b0c10;
  color: var(--text);
  border-color: var(--border);
}
#tab-linux:checked ~ .tab-panels .tab-panel[data-os="linux"],
#tab-macos:checked ~ .tab-panels .tab-panel[data-os="macos"],
#tab-win:checked   ~ .tab-panels .tab-panel[data-os="win"] { display: block; }

.code {
  margin: 0;
  padding: 1.2rem;
  font-family: var(--mono);
  font-size: 0.85rem;
  line-height: 1.6;
  color: #d3d7e0;
  overflow-x: auto;
  white-space: pre;
}

/* ---------- Requirements ---------- */
.req-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}
.req {
  border-left: 3px solid var(--accent);
  padding: 0.2rem 0 0.2rem 1rem;
}
.req h3 { margin: 0 0 0.4rem; font-size: 1.05rem; }
.req p { margin: 0; color: var(--muted); font-size: 0.95rem; }

/* ---------- Final CTA ---------- */
.final-cta {
  text-align: center;
  background: linear-gradient(180deg, var(--bg-soft), transparent);
  border-top: 1px solid var(--border);
  border-radius: 0;
  max-width: 100%;
}
.final-cta h2 { font-size: clamp(1.6rem, 4vw, 2.4rem); margin: 0 0 0.6rem; letter-spacing: -0.02em; }
.final-cta p { color: var(--muted); margin: 0 0 1.6rem; }
.final-cta .hero-cta { justify-content: center; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); background: var(--bg-soft); }
.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 2.5rem clamp(1rem, 4vw, 2rem);
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}
.footer-inner nav { display: flex; gap: 1.2rem; flex-wrap: wrap; }
.footer-inner nav a { color: var(--muted); font-size: 0.9rem; }
.footer-fine { color: #6b7080; font-size: 0.8rem; margin: 0.4rem 0 0; max-width: 60ch; }

/* ---------- Responsive ---------- */
@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; text-align: center; }
  .hero-cta { justify-content: center; }
  .lede { margin-left: auto; margin-right: auto; }
  .hero-art { order: -1; }
  .site-nav a:not(.nav-gh) { display: none; }
}