:root{
  --bg:#0a0c12; --panel:#12151d; --panel-2:#181c26; --line: rgba(255,255,255,0.08);
  --text:#eef1f8; --sub:#8993a8; --accent:#ff5c8a; --accent-2:#7c5cff; --gold:#ffb648;
}
[data-theme="light"]{
  --bg:#f5f6fa; --panel:#ffffff; --panel-2:#f0f1f6; --line: rgba(10,12,18,0.08);
  --text:#12141c; --sub:#5c6377; --accent:#e11d6a; --accent-2:#5e42d6; --gold:#c07600;
}
*{margin:0;padding:0;box-sizing:border-box;}
html, body{
  max-width:100%;
  overflow-x:hidden;
}
body{
  background:var(--bg);color:var(--text);font-family:'Inter',sans-serif;
  transition:background .3s ease,color .3s ease;
  padding-left:env(safe-area-inset-left);
  padding-right:env(safe-area-inset-right);
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}

/* ---------- topbar ---------- */
.topbar{
  position:sticky;top:0;z-index:40;
  background:color-mix(in srgb,var(--bg) 88%,transparent);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  padding:12px 16px;
  display:flex;align-items:center;justify-content:space-between;
  padding-top:calc(12px + env(safe-area-inset-top));
}
.brand{display:flex;align-items:center;gap:8px;font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:18px;}
.brand .mark{
  width:28px;height:28px;border-radius:8px;
  background:linear-gradient(135deg,#feda75,#fa7e1e,#d62976,#962fbf,#4f5bd5);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.theme-toggle{display:flex;align-items:center;gap:6px;background:var(--panel);border:1px solid var(--line);border-radius:100px;padding:4px;cursor:pointer;}
.theme-toggle .knob{width:24px;height:24px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent-2));display:flex;align-items:center;justify-content:center;font-size:12px;}
.theme-toggle .label{font-size:11px;color:var(--sub);padding-right:4px;font-weight:500;}

/* ---------- hero (compact, so tool + result fit near top) ---------- */
.hero{padding:20px 16px 24px;text-align:center;position:relative;}
.hero-glow{
  position:absolute;top:-10%;left:50%;transform:translateX(-50%);
  width:100%;max-width:600px;height:220px;
  background:radial-gradient(ellipse at center, color-mix(in srgb, var(--accent) 12%, transparent), transparent 70%);
  pointer-events:none;z-index:0;
}
h1{
  font-family:'Space Grotesk',sans-serif;font-weight:700;
  font-size:clamp(22px,5.5vw,32px);letter-spacing:-0.01em;line-height:1.15;
  position:relative;max-width:480px;margin:0 auto;
}
h1 .grad{background:linear-gradient(100deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent;}

.tool-box{
  max-width:560px;margin:18px auto 0;
  background:var(--panel);border:1px solid var(--line);border-radius:14px;
  padding:8px;display:flex;gap:6px;position:relative;z-index:1;
  box-shadow:0 16px 40px -24px rgba(0,0,0,0.5);
}
.tool-box input{
  flex:1;min-width:0;background:transparent;border:none;outline:none;
  padding:10px 10px;color:var(--text);font-size:14px;
}
.tool-box input::placeholder{color:var(--sub);}
.tool-box button{
  border:none;border-radius:9px;font-weight:600;font-size:13px;cursor:pointer;
  font-family:'Inter',sans-serif;padding:0 14px;white-space:nowrap;flex-shrink:0;
  transition:transform 0.15s ease, box-shadow 0.15s ease, opacity 0.15s ease;
}
.tool-box button:not(.paste-btn){background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;}
.tool-box button:not(.paste-btn):active{transform:scale(0.96);}
.tool-box button:hover{box-shadow:0 6px 16px -6px color-mix(in srgb, var(--accent) 50%, transparent);}
.paste-btn{background:var(--panel-2);color:var(--text);border:1px solid var(--line) !important;}

.tool-hint{
  max-width:560px;margin:8px auto 0;font-size:11px;color:var(--sub);
  display:flex;justify-content:center;gap:14px;position:relative;z-index:1;
}

.trust-strip{
  max-width:560px;margin:14px auto 0;display:flex;justify-content:center;
  gap:10px;flex-wrap:wrap;position:relative;z-index:1;
}
.trust-strip span{
  font-size:11px;font-weight:600;color:var(--sub);
  background:var(--panel);border:1px solid var(--line);
  padding:6px 12px;border-radius:100px;
}

/* ---------- animations ---------- */
@keyframes fadeInUp{
  from{opacity:0;transform:translateY(14px);}
  to{opacity:1;transform:translateY(0);}
}
.fade-in{
  opacity:0;
  animation:fadeInUp 0.6s ease forwards;
}
.delay-1{animation-delay:0.1s;}
.delay-2{animation-delay:0.2s;}
.delay-3{animation-delay:0.3s;}

.reveal{
  opacity:0;transform:translateY(16px);
  transition:opacity 0.6s ease, transform 0.6s ease;
}
.reveal.in-view{opacity:1;transform:translateY(0);}

@keyframes popIn{
  from{opacity:0;transform:scale(0.96);}
  to{opacity:1;transform:scale(1);}
}
.result-card, .carousel-slide{animation:popIn 0.35s ease;}

@media (prefers-reduced-motion: reduce){
  .fade-in, .reveal, .result-card, .carousel-slide{animation:none !important;transition:none !important;opacity:1 !important;transform:none !important;}
}

/* ---------- result area ---------- */
.result-area{max-width:420px;margin:16px auto 0;position:relative;z-index:1;}

.result-card{
  background:var(--panel);border:1px solid var(--line);border-radius:14px;
  padding:14px;display:flex;flex-direction:column;gap:10px;align-items:center;text-align:center;
}
.result-thumb-video{
  width:100%;max-width:200px;aspect-ratio:9/16;border-radius:10px;
  overflow:hidden;border:1px solid var(--line);background:var(--panel-2);
}
.result-thumb-video img{width:100%;height:100%;object-fit:cover;}
.result-thumb-image{
  width:100%;max-width:280px;border-radius:10px;overflow:hidden;
  border:1px solid var(--line);background:var(--panel-2);
}
.result-thumb-image img{width:100%;height:auto;display:block;}
.result-name{font-size:13px;font-weight:600;}
.dl-btn{
  display:inline-block;background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#fff;font-size:12.5px;font-weight:600;padding:9px 18px;border-radius:8px;border:none;cursor:pointer;
  transition:transform 0.15s ease, box-shadow 0.15s ease;
}
.dl-btn:hover{box-shadow:0 8px 20px -8px color-mix(in srgb, var(--accent) 50%, transparent);}
.dl-btn:active{transform:scale(0.96);}

/* ---------- carousel (multi-photo posts) ---------- */
.carousel{
  display:flex;overflow-x:auto;scroll-snap-type:x mandatory;
  gap:12px;padding-bottom:6px;
  scrollbar-width:none;
}
.carousel::-webkit-scrollbar{display:none;}
.carousel-slide{
  flex:0 0 100%;scroll-snap-align:center;
  background:var(--panel);border:1px solid var(--line);border-radius:14px;
  padding:14px;display:flex;flex-direction:column;gap:10px;align-items:center;text-align:center;
}
.carousel-dots{display:flex;justify-content:center;gap:6px;margin-top:8px;}
.carousel-dots span{width:6px;height:6px;border-radius:50%;background:var(--line);}

/* ---------- error / raw response box ---------- */
.raw-box{
  text-align:left;white-space:pre-wrap;word-break:break-all;font-size:11px;
  background:var(--panel-2);padding:10px;border-radius:8px;max-height:280px;overflow:auto;margin-top:8px;
}

/* ---------- content sections ---------- */
main{max-width:900px;margin:0 auto;padding:8px 16px 70px;}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;margin-top:10px;}
.step{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:18px;transition:transform 0.2s ease, border-color 0.2s ease;}
.step:hover{transform:translateY(-3px);border-color:color-mix(in srgb, var(--accent) 40%, var(--line));}
.step .num{font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:20px;color:var(--accent);margin-bottom:6px;}
.step h3{font-size:13.5px;font-weight:600;margin-bottom:5px;}
.step p{font-size:12px;color:var(--sub);line-height:1.5;}

.section-title{font-family:'Space Grotesk',sans-serif;font-size:19px;font-weight:600;margin:38px 0 6px;}
.section-sub{font-size:13px;color:var(--sub);margin-bottom:16px;}

.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;}
.feature{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px;font-size:13px;color:var(--sub);display:flex;gap:9px;align-items:flex-start;}
.feature .tick{color:var(--accent);font-weight:700;flex-shrink:0;}

footer{text-align:center;padding:24px 16px;color:var(--sub);font-size:12px;border-top:1px solid var(--line);}

@media (max-width:420px){
  .theme-toggle .label{display:none;}
  .tool-box{flex-wrap:wrap;}
  .tool-box input{flex-basis:100%;}
  .tool-box button{flex:1;padding:10px;}
}