/* Helm Pad — marketing site */

:root {
  --bg:        #FFF8F1;
  --bg-soft:   #FBE9D7;
  --surface:   #FFFCF8;
  --fg:        #3D2A1B;
  --fg-muted:  #8A6A4E;
  --accent:    #C97A2F;
  --accent-fg: #FFFCF8;
  --accent-soft: #FFE1C5;
  --line:      #E9C9A6;
  --shadow:    0 6px 24px rgba(61, 42, 27, 0.08);
  --radius:    14px;
  --radius-sm: 10px;
  --max-width: 1080px;
  --pad:       clamp(20px, 4vw, 48px);
  --font-sans: ui-sans-serif, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:          #1E1B19;
    --bg-soft:     #2A2623;
    --surface:     #2A2623;
    --fg:          #FFFCF8;
    --fg-muted:    #C9B7A1;
    --accent:      #FFD1A6;
    --accent-fg:   #1E1B19;
    --accent-soft: #4A382A;
    --line:        #5A4634;
    --shadow:      0 6px 24px rgba(0, 0, 0, 0.35);
  }

  /* Hero/loop SVGs are warm-light by design; nudge contrast in dark mode
     without shipping a duplicate dark-only SVG. */
  .hero-figure img,
  .loop-figure img {
    filter: brightness(0.96) saturate(0.95);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.6;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg { max-width: 100%; height: auto; display: block; }

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

a:focus-visible,
button:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

h1, h2, h3 { line-height: 1.2; margin: 0 0 0.5em; color: var(--fg); }
h1 { font-size: clamp(32px, 4.6vw, 52px); font-weight: 700; letter-spacing: -0.02em; }
h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 700; letter-spacing: -0.01em; margin-bottom: 24px; }
h3 { font-size: 18px; font-weight: 600; }

p { margin: 0 0 1em; }

/* Header ------------------------------------------------------------ */

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px var(--pad) 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--fg);
  font-size: 18px;
  font-weight: 700;
}
.brand:hover { text-decoration: none; }

.brand-mark {
  display: inline-block;
  width: 22px;
  height: 22px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--accent), var(--accent-soft));
  box-shadow: inset 0 0 0 1px rgba(0,0,0,0.08);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}
.site-nav a {
  color: var(--fg-muted);
  font-size: 15px;
  font-weight: 500;
}
.site-nav a:hover { color: var(--fg); text-decoration: none; }

/* Main / hero ------------------------------------------------------- */

main { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--pad); }

.hero {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(24px, 4vw, 56px);
  align-items: center;
  padding: clamp(40px, 7vw, 88px) 0 clamp(32px, 5vw, 64px);
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--fg-muted);
  background: var(--accent-soft);
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.hero h1 .accent {
  color: var(--accent);
  display: inline;
}

.tagline {
  font-size: clamp(16px, 1.4vw, 19px);
  color: var(--fg-muted);
  margin: 0 0 28px;
  max-width: 52ch;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 14px;
}

.cta-note {
  font-size: 13px;
  color: var(--fg-muted);
  margin: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 15px;
  border: 1.5px solid transparent;
  transition: transform 0.08s ease, box-shadow 0.15s ease, background 0.15s ease;
  min-height: 44px;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--accent);
  color: var(--accent-fg);
  box-shadow: var(--shadow);
}
.btn-primary:hover { background: var(--fg); color: var(--bg); }

.btn-ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--line);
}
.btn-ghost:hover { background: var(--bg-soft); border-color: var(--accent); }

.hero-figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--surface);
}

/* What it does ------------------------------------------------------ */

.what, .install {
  padding: clamp(40px, 6vw, 72px) 0;
  border-top: 1px solid var(--line);
}

.lead {
  font-size: 18px;
  color: var(--fg-muted);
  max-width: 60ch;
  margin-bottom: 28px;
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 0 0 36px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}

.feature-list li {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}

.feature-list h3 {
  margin-bottom: 8px;
  color: var(--accent);
}

.feature-list p {
  margin: 0;
  font-size: 15px;
  color: var(--fg-muted);
}

.loop-figure {
  margin: 36px 0 28px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--surface);
}

.vibe {
  font-size: 17px;
  color: var(--fg);
  font-style: italic;
  max-width: 64ch;
  border-left: 3px solid var(--accent);
  padding-left: 18px;
  margin: 32px 0 0;
}

/* Steps ------------------------------------------------------------- */

.steps {
  list-style: none;
  counter-reset: step;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 18px;
}

.steps li {
  counter-increment: step;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 22px 22px 64px;
  position: relative;
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 18px;
  top: 22px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-fg);
  font-weight: 700;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.steps h3 { margin-bottom: 6px; }
.steps p { margin: 0; font-size: 15px; color: var(--fg-muted); }

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

.site-footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: clamp(40px, 6vw, 64px) var(--pad);
  border-top: 1px solid var(--line);
  text-align: center;
  font-size: 14px;
  color: var(--fg-muted);
}

.site-footer p { margin: 0 0 8px; }
.site-footer .meta { color: var(--fg-muted); }
.site-footer a { color: var(--fg-muted); text-decoration: underline; text-decoration-color: var(--line); text-underline-offset: 3px; }
.site-footer a:hover { color: var(--accent); text-decoration-color: var(--accent); }

#release-meta time { font-variant-numeric: tabular-nums; }

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

@media (max-width: 880px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: clamp(24px, 6vw, 56px);
  }
  .hero-figure { order: -1; }
}

@media (max-width: 480px) {
  body { font-size: 16px; }
  .site-header { padding-top: 16px; }
  .site-nav { gap: 14px; }
  .btn { width: 100%; justify-content: center; }
  .cta-row { flex-direction: column; }
  .steps li { padding-left: 22px; padding-top: 56px; }
  .steps li::before { top: 18px; left: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
}