:root{
  --bg:#F5F6F8;
  --surface:#FFFFFF;
  --surface-2:#ECEEF2;
  --border:#E1E4EA;
  --ink:#14171F;
  --ink-dim:#5B6070;
  --ink-faint:#8A8FA0;
  --accent:#C6862A;
  --accent-strong:#A66E1E;
  --accent-ink:#2A1B02;
  --accent-soft:rgba(198,134,42,0.12);
  --danger:#B3382C;
  --radius:18px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(20,23,31,0.04),0 8px 24px -12px rgba(20,23,31,0.12);

  --font-display:'Space Grotesk','Inter',system-ui,sans-serif;
  --font-body:'Inter',system-ui,-apple-system,sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,'SF Mono',monospace;

  --dot-youtube:#D8382B;
  --dot-instagram:#C13584;
  --dot-facebook:#1877F2;
  --dot-tiktok:#1C1C1E;
  --dot-twitter:#14171F;
}

@media (prefers-color-scheme: dark){
  :root{
    --bg:#131317;
    --surface:#1B1C21;
    --surface-2:#232429;
    --border:rgba(255,255,255,0.09);
    --ink:#F1F2F5;
    --ink-dim:#9FA3B0;
    --ink-faint:#6D7280;
    --accent:#E3AA57;
    --accent-strong:#EEBB72;
    --accent-ink:#1E1400;
    --accent-soft:rgba(227,170,87,0.16);
    --shadow:0 1px 2px rgba(0,0,0,0.3),0 12px 28px -14px rgba(0,0,0,0.55);
    --dot-tiktok:#EDEEF2;
    --dot-twitter:#EDEEF2;
  }
}

*{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none !important}
html{-webkit-text-size-adjust:100%}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-body);
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}
.wrap{max-width:640px;margin:0 auto;padding:0 20px}
a{color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* Preview banner */
.preview-banner{
  background:var(--accent-soft);color:var(--accent-strong);text-align:center;
  font-size:12.5px;padding:9px 20px;border-bottom:1px solid var(--border);
}

/* App shell top bar */
.site-header{
  position:sticky;top:0;z-index:10;
  background:var(--bg);
  background:color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 20px;max-width:640px;margin:0 auto;
}
.brand{display:flex;align-items:center;gap:9px;font-family:var(--font-display);font-weight:600;font-size:18px;text-decoration:none}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:28px;height:28px;border-radius:9px;
  background:var(--accent);color:var(--accent-ink);font-size:15px;flex-shrink:0;
}
.nav-link{
  font-size:13.5px;color:var(--ink-dim);text-decoration:none;font-weight:500;
  padding:7px 12px;border-radius:999px;transition:background .15s ease,color .15s ease;
}
.nav-link:hover{background:var(--surface-2);color:var(--ink)}

main{padding:36px 0 60px}

/* Hero / app card */
.app-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:32px 28px;
}
.app-card + .app-card{margin-top:16px}

h1{
  font-family:var(--font-display);
  font-weight:600;
  font-size:clamp(24px,5vw,32px);
  letter-spacing:-0.01em;
  line-height:1.15;
  margin-bottom:10px;
}
.hero__sub{color:var(--ink-dim);font-size:15px;margin-bottom:24px;max-width:46ch}

.fetch-form__input-row{
  display:flex;gap:8px;
  background:var(--surface-2);
  border:1.5px solid var(--border);
  border-radius:var(--radius-sm);
  padding:5px;
  transition:border-color .18s ease;
}
.fetch-form__input-row:focus-within{border-color:var(--accent)}
#url-input{
  flex:1;min-width:0;
  background:transparent;border:none;color:var(--ink);
  padding:11px 12px;
  font-family:var(--font-mono);
  font-size:14px;
}
#url-input::placeholder{color:var(--ink-faint);font-family:var(--font-body)}
#url-input:focus{outline:none}
#fetch-btn{
  background:var(--accent);color:var(--accent-ink);
  border:none;border-radius:calc(var(--radius-sm) - 3px);
  padding:0 20px;font-weight:600;font-size:14px;font-family:var(--font-body);
  cursor:pointer;white-space:nowrap;
  transition:background .15s ease,transform .1s ease;
}
#fetch-btn:hover{background:var(--accent-strong)}
#fetch-btn:active{transform:scale(0.98)}
#fetch-btn:disabled{opacity:0.6;cursor:progress}
.btn-spinner{
  display:inline-block;width:13px;height:13px;border-radius:50%;
  border:2px solid rgba(0,0,0,0.25);border-top-color:var(--accent-ink);
  animation:spin .7s linear infinite;vertical-align:-2px;margin-left:6px;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* Bookmarklet install */
.bookmarklet-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:20px}
.bookmarklet{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--accent);color:var(--accent-ink);
  padding:12px 20px;border-radius:var(--radius-sm);
  font-weight:700;font-size:14.5px;text-decoration:none;
  cursor:grab;user-select:none;
  box-shadow:var(--shadow);
  transition:background .15s ease,transform .1s ease;
}
.bookmarklet:hover{background:var(--accent-strong)}
.bookmarklet:active{cursor:grabbing;transform:scale(0.98)}
.bookmarklet__mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:20px;height:20px;border-radius:6px;
  background:rgba(0,0,0,0.18);font-size:12px;
}
.bookmarklet__hint{font-size:12.5px;color:var(--ink-faint)}

.steps{
  margin:0 0 4px;padding-left:20px;
  display:flex;flex-direction:column;gap:6px;
  font-size:13.5px;color:var(--ink-dim);
}
.steps li::marker{color:var(--accent);font-weight:700}
.steps--tight{margin:8px 0 12px;font-size:13px;gap:5px}

.mobile-note{margin-top:18px;border-top:1px solid var(--border);padding-top:14px}
.mobile-note summary{cursor:pointer;font-size:13px;font-weight:600;color:var(--ink-dim)}
.mobile-note p{font-size:13px;color:var(--ink-dim);margin-top:10px}
.bookmarklet-code{
  width:100%;margin-top:10px;padding:10px;
  font-family:var(--font-mono);font-size:11px;line-height:1.4;
  background:var(--surface-2);color:var(--ink);
  border:1px solid var(--border);border-radius:var(--radius-sm);
  resize:vertical;
}
.copy-btn{
  margin-top:8px;background:var(--surface-2);border:1px solid var(--border);
  color:var(--ink);padding:7px 14px;border-radius:var(--radius-sm);
  font-size:12.5px;font-family:var(--font-body);cursor:pointer;
}
.copy-btn:hover{border-color:var(--accent)}

.fallback-title{
  font-family:var(--font-display);font-size:19px;font-weight:600;margin-bottom:8px;
}

/* Supported-platform icon strip */
.platform-strip{display:flex;gap:8px;margin-bottom:20px;align-items:center}
.platform-icon{width:20px;height:20px;border-radius:6px;display:block;flex-shrink:0}
.platform-icon--coming{opacity:0.35;filter:grayscale(0.6)}

/* Signature: live platform detection status */
.detect-row{
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;
  gap:10px;margin-top:14px;min-height:24px;
}
.detect-status{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-faint);
}
.detect-status .platform-icon{width:16px;height:16px;border-radius:4px}
.detect-dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--ink-faint);
  transition:background .2s ease,transform .2s ease;
}
.detect-status.is-active{color:var(--ink)}
.detect-status.is-active .detect-dot{display:none}
.detect-status:not(.is-active) .detect-icon{display:none}

.mode-toggle{display:flex;gap:4px;background:var(--surface-2);border-radius:999px;padding:3px}
.mode-btn{
  background:transparent;border:none;color:var(--ink-dim);
  font-size:12.5px;font-weight:600;font-family:var(--font-body);
  padding:6px 12px;border-radius:999px;cursor:pointer;
  transition:background .15s ease,color .15s ease;
}
.mode-btn.is-selected{background:var(--surface);color:var(--ink);box-shadow:var(--shadow)}
#result-mode-toggle{margin:14px 0 4px}
[data-platform="youtube"] .detect-dot{background:var(--dot-youtube)}
[data-platform="instagram"] .detect-dot{background:var(--dot-instagram)}
[data-platform="facebook"] .detect-dot{background:var(--dot-facebook)}
[data-platform="tiktok"] .detect-dot{background:var(--dot-tiktok)}
[data-platform="twitter"] .detect-dot{background:var(--dot-twitter)}

.error-msg{color:var(--danger);margin-top:14px;font-size:13.5px}

.trust-line{margin-top:22px;font-size:12.5px;color:var(--ink-faint)}

/* Results */
.results__media{margin-bottom:16px}
.results__thumb{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border-radius:var(--radius-sm);background:var(--surface-2);display:block;
}
.results__platform{
  display:inline-flex;align-items:center;gap:6px;
  font-size:11px;text-transform:uppercase;letter-spacing:.06em;font-weight:700;
  color:var(--ink-faint);margin-bottom:6px;
}
.results__platform .platform-icon{width:16px;height:16px;border-radius:4px}
.results__info h2{font-family:var(--font-display);font-size:18px;font-weight:600;margin-bottom:4px;line-height:1.3}
.results__meta{color:var(--ink-faint);font-size:12.5px;font-family:var(--font-mono);margin-bottom:18px}
.format-group{margin-top:16px}
.format-group h3{font-size:11.5px;color:var(--ink-faint);margin-bottom:8px;text-transform:uppercase;letter-spacing:.06em;font-weight:700}
.format-list{display:flex;flex-wrap:wrap;gap:8px}
.format-btn{
  background:var(--surface-2);border:1px solid var(--border);color:var(--ink);
  padding:9px 13px;border-radius:var(--radius-sm);font-size:13px;font-family:var(--font-mono);cursor:pointer;
  text-decoration:none;display:inline-flex;align-items:center;
  transition:border-color .15s ease,background .15s ease;
}
.format-btn:hover{border-color:var(--accent);background:var(--accent-soft)}
.format-btn:visited{color:var(--ink)}

/* Ad slot — one native-feeling unit, not a placeholder box */
.ad-slot{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:14px 16px;min-height:64px;
  display:flex;align-items:center;justify-content:center;
  color:var(--ink-faint);font-size:12px;position:relative;
}
.ad-slot__tag{
  position:absolute;top:8px;left:10px;
  font-size:9.5px;letter-spacing:.06em;text-transform:uppercase;
  color:var(--ink-faint);background:var(--surface-2);
  padding:2px 6px;border-radius:5px;
}
.ad-slot--rect{min-height:220px}
.ad-slot--interstitial{min-height:180px;margin:16px 0}

/* Footer */
.site-footer{padding:28px 0 40px}
.footer-links{display:flex;gap:16px;font-size:13px;margin-bottom:14px}
.footer-links a{text-decoration:none;color:var(--ink-dim);font-weight:500}
.footer-links a:hover{color:var(--ink)}
.disclaimer{color:var(--ink-faint);font-size:12px;line-height:1.6}

/* Interstitial modal */
.interstitial{
  position:fixed;inset:0;background:rgba(15,15,17,0.55);
  display:flex;align-items:center;justify-content:center;
  z-index:100;padding:20px;
}
.interstitial__box{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:26px;max-width:400px;width:100%;text-align:center;
}
.interstitial__title{font-weight:600;margin-bottom:16px;font-family:var(--font-display)}
.interstitial__countdown{color:var(--ink-faint);font-size:12.5px;margin-top:14px;font-family:var(--font-mono)}

/* --- Long-form content page (/learn) reuses these --- */
.content-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:28px;
}
.content-card + .content-card{margin-top:16px}
.content-card h2{font-family:var(--font-display);font-size:19px;font-weight:600;margin-bottom:14px}
.how-it-works ol{padding-left:20px;display:flex;flex-direction:column;gap:8px;color:var(--ink)}
.platform-grid,.why-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px}
.platform-grid h3,.why-grid h3{font-size:14.5px;margin-bottom:6px;font-weight:600;display:flex;align-items:center;gap:8px}
.platform-grid h3 .platform-icon{width:18px;height:18px;border-radius:5px}
.platform-grid p,.why-grid p{color:var(--ink-dim);font-size:13.5px}
.faq details{border-top:1px solid var(--border);padding:12px 0}
.faq details:first-child{border-top:none}
.faq summary{cursor:pointer;font-weight:600;font-size:14.5px}
.faq p{color:var(--ink-dim);margin-top:8px;font-size:13.5px}
.learn-hero{padding:8px 0 4px}
.learn-hero h1{font-size:clamp(22px,4.5vw,28px)}
.learn-hero p{color:var(--ink-dim);font-size:15px;max-width:52ch}
.cta-back{
  display:inline-flex;align-items:center;gap:6px;margin-top:18px;
  background:var(--accent);color:var(--accent-ink);text-decoration:none;
  font-weight:600;font-size:14px;padding:11px 20px;border-radius:var(--radius-sm);
}

/* Tablet / laptop: more "website" breathing room */
@media (min-width:820px){
  .wrap,.header-inner{max-width:760px}
  main{padding:56px 0 80px}
  .app-card{padding:40px 44px}
  .content-card{padding:36px 40px}
}