/* ClankerHigh - clankerhigh.com
   Plain CSS, no build step. Tokens on :root, dark mode via prefers-color-scheme. */

:root {
  --bg: #ffffff;
  --surface: #f7fafc;
  --surface-2: #eef1f6;
  --text: #1a202c;
  --text-2: #2d3748;
  --muted: #718096;
  --border: #e2e8f0;
  --border-strong: #cbd5e0;
  --accent: #667eea;
  --accent-2: #764ba2;
  --accent-soft: rgba(102, 126, 234, 0.12);
  --success: #10b981;
  --success-soft: #d1fae5;
  --success-text: #065f46;
  --warn-soft: #fef3c7;
  --warn-text: #92400e;
  --warn-border: #fcd34d;
  --code-bg: #edf2f7;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.04), 0 8px 24px rgba(16, 24, 40, 0.06);
  --shadow-lg: 0 2px 4px rgba(16, 24, 40, 0.06), 0 24px 48px rgba(16, 24, 40, 0.12);
  --radius: 14px;
  --radius-sm: 10px;
  --gutter: 24px;
  --section: 96px;
  --max: 1100px;
  --font: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, 'Liberation Mono', monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1117;
    --surface: #161922;
    --surface-2: #1d2130;
    --text: #e6e8ee;
    --text-2: #cfd3dc;
    --muted: #9aa3b2;
    --border: #262b38;
    --border-strong: #343a4a;
    --accent-soft: rgba(102, 126, 234, 0.18);
    --success-soft: rgba(16, 185, 129, 0.16);
    --success-text: #6ee7b7;
    --warn-soft: rgba(252, 211, 77, 0.12);
    --warn-text: #fcd34d;
    --warn-border: rgba(252, 211, 77, 0.35);
    --code-bg: #1d2130;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 2px 4px rgba(0, 0, 0, 0.4), 0 24px 48px rgba(0, 0, 0, 0.5);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #0f1117;
  --surface: #161922;
  --surface-2: #1d2130;
  --text: #e6e8ee;
  --text-2: #cfd3dc;
  --muted: #9aa3b2;
  --border: #262b38;
  --border-strong: #343a4a;
  --accent-soft: rgba(102, 126, 234, 0.18);
  --success-soft: rgba(16, 185, 129, 0.16);
  --success-text: #6ee7b7;
  --warn-soft: rgba(252, 211, 77, 0.12);
  --warn-text: #fcd34d;
  --warn-border: rgba(252, 211, 77, 0.35);
  --code-bg: #1d2130;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 2px 4px rgba(0, 0, 0, 0.4), 0 24px 48px rgba(0, 0, 0, 0.5);
  color-scheme: dark;
}

/* ---------- Base ---------- */

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

h1, h2, h3 { margin: 0; line-height: 1.12; letter-spacing: -0.025em; color: var(--text); }
h1 { font-size: clamp(2.4rem, 5.6vw, 4rem); font-weight: 700; }
h2 { font-size: clamp(1.8rem, 3.4vw, 2.5rem); font-weight: 700; }
h3 { font-size: 1.125rem; font-weight: 600; letter-spacing: -0.01em; }
p { margin: 0; }

code {
  font-family: var(--mono);
  font-size: 0.9em;
  background: var(--code-bg);
  padding: 0.15em 0.45em;
  border-radius: 6px;
}

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
.narrow { max-width: 760px; }

.section { padding: var(--section) 0; }
.section-head { max-width: 640px; margin-bottom: 48px; }
.section-head p { margin-top: 14px; color: var(--muted); font-size: 1.1rem; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}

.muted { color: var(--muted); }

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn svg { width: 18px; height: 18px; }

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  box-shadow: 0 6px 18px rgba(102, 126, 234, 0.28);
}
.btn-primary:hover { box-shadow: 0 10px 24px rgba(102, 126, 234, 0.36); }

.btn-secondary {
  color: var(--text);
  background: var(--bg);
  border-color: var(--border-strong);
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

.btn-lg { padding: 16px 28px; font-size: 1.05rem; }
.btn-sm { padding: 9px 16px; font-size: 0.875rem; }

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

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 16px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.05rem; letter-spacing: -0.01em; }
.brand img { width: 30px; height: 30px; }

.nav-links { display: flex; align-items: center; gap: 28px; list-style: none; margin: 0; padding: 0; }
.nav-links a { font-size: 0.95rem; font-weight: 500; color: var(--text-2); }
.nav-links a:hover { color: var(--accent); }
.nav-links a.active { color: var(--accent); }
.nav-links a.btn, .nav-links a.btn:hover { color: #fff; }

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.nav-toggle svg { width: 20px; height: 20px; }

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

.hero { padding: 88px 0 72px; position: relative; overflow: hidden; }
.hero::before {
  content: '';
  position: absolute;
  inset: -40% -20% auto -20%;
  height: 90%;
  background:
    radial-gradient(60% 55% at 30% 30%, var(--accent-soft) 0%, transparent 70%),
    radial-gradient(40% 45% at 75% 20%, rgba(118, 75, 162, 0.10) 0%, transparent 70%);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 56px;
  align-items: center;
}
.hero p.lead { margin-top: 22px; font-size: 1.2rem; color: var(--muted); max-width: 540px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.hero-meta { margin-top: 22px; font-size: 0.9rem; color: var(--muted); display: flex; flex-wrap: wrap; gap: 6px 18px; }
.hero-meta span { display: inline-flex; align-items: center; gap: 6px; }
.hero-meta svg { width: 15px; height: 15px; color: var(--success); }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px 6px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-2);
  margin-bottom: 22px;
}
.pill .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--success); box-shadow: 0 0 0 3px var(--success-soft); }
.pill .sep { color: var(--border-strong); }

/* ---------- Popup mock ---------- */

.mock-wrap { display: flex; justify-content: center; }
.mock {
  width: 100%;
  max-width: 380px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  font-size: 14px;
}
.mock-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  color: #fff;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}
.mock-head img { width: 36px; height: 36px; background: rgba(255,255,255,0.92); border-radius: 9px; padding: 3px; }
.mock-head strong { display: block; font-size: 17px; letter-spacing: -0.01em; }
.mock-head small { opacity: 0.85; font-size: 12px; }
.mock-body { padding: 16px; background: var(--surface); display: grid; gap: 14px; }
.mock-label { display: flex; align-items: center; gap: 7px; font-size: 11px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.mock-label svg { width: 14px; height: 14px; }
.mock-card { background: var(--bg); border: 1px solid var(--border); border-radius: 12px; padding: 14px; }
.mock-q { font-size: 12.5px; color: var(--muted); margin-bottom: 8px; line-height: 1.45; }
.mock-answer { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 15px; color: var(--text); }
.mock-answer .check { width: 22px; height: 22px; flex: none; border-radius: 50%; background: var(--success); color: #fff; display: inline-grid; place-items: center; }
.mock-answer .check svg { width: 13px; height: 13px; }
.mock-status { margin-top: 10px; display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 500; color: var(--success-text); background: var(--success-soft); padding: 4px 10px; border-radius: 999px; }
.mock-toggles { display: grid; gap: 8px; }
.mock-toggle { display: flex; align-items: center; gap: 12px; background: var(--bg); border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; }
.mock-toggle .sw { width: 36px; height: 20px; flex: none; border-radius: 999px; background: linear-gradient(135deg, #667eea, #764ba2); position: relative; }
.mock-toggle .sw::after { content: ''; position: absolute; top: 2px; right: 2px; width: 16px; height: 16px; border-radius: 50%; background: #fff; }
.mock-toggle b { display: block; font-size: 13px; font-weight: 600; color: var(--text); }
.mock-toggle span { font-size: 11.5px; color: var(--muted); }

/* ---------- Trust row ---------- */

.trust { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: var(--surface); }
.trust-inner { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; padding: 26px 0; }
.trust-item { display: flex; align-items: center; gap: 12px; font-size: 0.95rem; color: var(--text-2); }
.trust-item svg { width: 22px; height: 22px; color: var(--accent); flex: none; }
.trust-item b { display: block; font-weight: 600; color: var(--text); }
.trust-item span { display: block; font-size: 0.85rem; color: var(--muted); }

/* ---------- Feature cards ---------- */

.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }

.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}
.card:hover { border-color: var(--border-strong); box-shadow: var(--shadow); transform: translateY(-2px); }
.card .icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: grid; place-items: center;
  background: var(--accent-soft);
  color: var(--accent);
  margin-bottom: 18px;
}
.card .icon svg { width: 22px; height: 22px; }
.card h3 { margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 0.98rem; }

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

.step { position: relative; padding: 28px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
.step .num {
  width: 36px; height: 36px;
  border-radius: 50%;
  display: grid; place-items: center;
  font-weight: 700;
  font-size: 0.95rem;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  margin-bottom: 18px;
}
.step h3 { margin-bottom: 8px; }
.step p { color: var(--muted); font-size: 0.98rem; }

/* ---------- Comparison ---------- */

.compare { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.compare-col { border: 1px solid var(--border); border-radius: var(--radius); padding: 30px; background: var(--bg); }
.compare-col.good { border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); background: linear-gradient(180deg, var(--accent-soft), transparent 60%); }
.compare-col h3 { font-size: 1.05rem; margin-bottom: 18px; display: flex; align-items: center; gap: 10px; }
.compare-col h3 .tag { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; padding: 3px 9px; border-radius: 999px; background: var(--surface-2); color: var(--muted); }
.compare-col.good h3 .tag { background: var(--accent); color: #fff; }
.compare-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.compare-col li { display: flex; gap: 12px; align-items: flex-start; color: var(--text-2); font-size: 0.98rem; }
.compare-col li svg { width: 20px; height: 20px; flex: none; margin-top: 2px; color: var(--muted); }
.compare-col.good li svg { color: var(--success); }

/* ---------- CTA band ---------- */

.cta {
  border-radius: 24px;
  padding: 64px 40px;
  text-align: center;
  color: #fff;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  position: relative;
  overflow: hidden;
}
.cta::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(60% 80% at 80% 0%, rgba(255,255,255,0.18), transparent 60%);
  pointer-events: none;
}
.cta > * { position: relative; }
.cta h2 { color: #fff; }
.cta p { margin: 14px auto 0; max-width: 520px; color: rgba(255,255,255,0.85); font-size: 1.1rem; }
.cta .btn { margin-top: 28px; background: #fff; color: var(--accent-2); box-shadow: 0 8px 24px rgba(0,0,0,0.18); }
.cta .btn:hover { box-shadow: 0 12px 28px rgba(0,0,0,0.24); }

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

.footer { border-top: 1px solid var(--border); padding: 40px 0; font-size: 0.9rem; color: var(--muted); }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px 32px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 20px; list-style: none; margin: 0; padding: 0; }
.footer-links a:hover { color: var(--accent); }
.footer .brand { font-size: 0.95rem; color: var(--text); }
.footer .brand img { width: 24px; height: 24px; }
.footer-note { width: 100%; font-size: 0.82rem; }

/* ---------- Install page ---------- */

.page-head { padding: 72px 0 40px; }
.page-head h1 { font-size: clamp(2.2rem, 4.6vw, 3.2rem); }
.page-head .lead { margin-top: 16px; color: var(--muted); font-size: 1.15rem; max-width: 600px; }
.download-box {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 24px;
  padding: 22px 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}
.download-box .meta { font-size: 0.9rem; color: var(--muted); display: grid; gap: 2px; }
.download-box .meta b { color: var(--text); font-weight: 600; }

.guide { padding-bottom: 48px; }
.guide-step {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 20px;
  padding: 32px 0;
  border-top: 1px solid var(--border);
}
.guide-step:first-child { border-top: 0; padding-top: 8px; }
.guide-step .num {
  width: 40px; height: 40px;
  border-radius: 50%;
  display: grid; place-items: center;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.guide-step h2 { font-size: 1.35rem; margin-bottom: 8px; }
.guide-step p { color: var(--text-2); }
.guide-step p + p { margin-top: 8px; }
.guide-step .shot {
  margin-top: 18px;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.guide-step .shot img { width: 100%; }
.guide-step .shot.sm { max-width: 420px; }
.guide-step .shot.md { max-width: 640px; }
.inline-icon { display: inline-block; width: 22px; height: 22px; vertical-align: -6px; margin: 0 2px; border-radius: 5px; background: #1b1c22; padding: 2px; }

.browser-tabs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-top: 12px; }
.browser-tab { border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 16px 18px; background: var(--surface); }
.browser-tab b { display: block; margin-bottom: 6px; color: var(--text); }
.browser-tab p { font-size: 0.95rem; color: var(--muted); }

.copy-row { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 8px; }
.copy-row code { font-size: 0.95rem; padding: 6px 10px; }
.copy-btn {
  display: inline-flex; align-items: center; gap: 6px;
  font: inherit; font-size: 0.8rem; font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  border: 0; border-radius: 8px;
  padding: 6px 10px;
  cursor: pointer;
}
.copy-btn svg { width: 14px; height: 14px; }

.callout {
  border: 1px solid var(--warn-border);
  background: var(--warn-soft);
  color: var(--warn-text);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  font-size: 0.95rem;
}
.callout b { font-weight: 600; }

.faq { display: grid; gap: 12px; }
.faq details { border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--bg); }
.faq summary { cursor: pointer; padding: 16px 18px; font-weight: 600; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; font-weight: 400; color: var(--muted); font-size: 1.3rem; line-height: 1; }
.faq details[open] summary::after { content: '\2013'; }
.faq .faq-body { padding: 0 18px 16px; color: var(--text-2); font-size: 0.98rem; }

/* ---------- 404 ---------- */

.center-page { min-height: calc(100vh - 64px); display: grid; place-items: center; text-align: center; padding: 64px var(--gutter); }
.center-page h1 { font-size: clamp(2rem, 5vw, 3rem); }
.center-page p { margin: 12px 0 28px; color: var(--muted); }

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

@media (max-width: 960px) {
  :root { --section: 72px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero p.lead { max-width: none; }
  .grid-3 { grid-template-columns: 1fr; }
  .trust-inner { grid-template-columns: 1fr; gap: 14px; }
}

@media (max-width: 720px) {
  :root { --gutter: 16px; --section: 56px; }
  body { font-size: 16px; }
  .hero { padding: 56px 0 48px; }
  .nav-toggle { display: inline-flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 64px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 8px var(--gutter) 16px;
  }
  .nav-links.open { display: flex; }
  .nav-links li { padding: 10px 0; }
  .nav-links .btn { margin-top: 6px; }
  .grid-2, .compare, .browser-tabs { grid-template-columns: 1fr; }
  .cta { padding: 48px 24px; border-radius: 18px; }
  .guide-step { grid-template-columns: 1fr; gap: 10px; }
  .page-head { padding: 48px 0 28px; }
  .download-box { padding: 18px; }
  .download-box .btn { width: 100%; }
}

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