/* ===========================
   QR-RDEV — style.css
   =========================== */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --c-bg:       #0a0a0f;
  --c-border:   rgba(255,255,255,0.1);
  --c-border-2: rgba(255,255,255,0.06);
  --c-text:     #f1f0ff;
  --c-muted:    rgba(241,240,255,0.5);
  --c-accent:   #dc2626;
  --c-accent-2: #ef4444;
  --c-accent-3: #fca5a5;
  --c-green:    #22c55e;
  --radius:     1.25rem;
  --radius-sm:  0.75rem;
  --tr:         0.2s cubic-bezier(0.4,0,0.2,1);
  --shadow:     0 0 0 1px rgba(255,255,255,0.07), 0 24px 60px rgba(0,0,0,0.5);
}

html { scroll-behavior: smooth; scroll-padding-top: 5rem; }

body {
  font-family: 'Outfit', system-ui, sans-serif;
  background: var(--c-bg);
  color: var(--c-text);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ---------- Orbs ---------- */
.bg-orb {
  position: fixed; border-radius: 50%; filter: blur(120px);
  opacity: 0.33; pointer-events: none; z-index: 0;
}
.orb-1 { width:600px; height:600px; background:radial-gradient(circle,#dc2626 0%,transparent 70%); top:-200px; left:-200px; animation:floatOrb 14s ease-in-out infinite; }
.orb-2 { width:450px; height:450px; background:radial-gradient(circle,#ef4444 0%,transparent 70%); bottom:5%; right:-150px; animation:floatOrb 18s ease-in-out infinite reverse; }
.orb-3 { width:350px; height:350px; background:radial-gradient(circle,#b91c1c 0%,transparent 70%); top:40%; left:50%; transform:translateX(-50%); animation:floatOrb 22s ease-in-out infinite 3s; }
@keyframes floatOrb {
  0%,100% { transform:translate(0,0) scale(1); }
  33%      { transform:translate(30px,-30px) scale(1.05); }
  66%      { transform:translate(-20px,20px) scale(0.97); }
}

/* ---------- Header ---------- */
.header {
  position: fixed; top:0; left:0; right:0; z-index:100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.8rem 1.5rem;
  background: rgba(10,10,15,0.78);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--c-border-2);
}
.logo { display:flex; align-items:center; gap:0.4rem; flex-shrink:0; }
.logo-icon { font-size:1.35rem; color:var(--c-accent-2); filter:drop-shadow(0 0 8px rgba(239,68,68,.6)); line-height:1; }
.logo-text { font-size:1.05rem; font-weight:400; letter-spacing:-0.01em; white-space:nowrap; }
.logo-text strong { font-weight:700; background:linear-gradient(135deg,var(--c-accent-2),var(--c-accent-3)); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.nav-pills { display:flex; gap:0.1rem; }
.nav-pill { text-decoration:none; color:var(--c-muted); font-size:0.8rem; font-weight:500; padding:0.32rem 0.7rem; border-radius:999px; transition:all var(--tr); white-space:nowrap; }
.nav-pill:hover, .nav-pill.active { color:var(--c-text); background:rgba(255,255,255,0.08); }

/* ---------- Main ---------- */
main { position:relative; z-index:1; padding-top:4.5rem; }

/* ---------- Hero ---------- */
.hero {
  display:flex; flex-direction:column; align-items:center; text-align:center;
  padding: 3.5rem 1rem 4.5rem;
  max-width: 720px; margin:0 auto;
}
.hero-badge {
  display:inline-flex; align-items:center; gap:0.5rem;
  background:rgba(220,38,38,0.15); border:1px solid rgba(220,38,38,0.3);
  color:var(--c-accent-3); font-size:0.78rem; font-weight:500;
  padding:0.32rem 0.9rem; border-radius:999px; margin-bottom:1.5rem;
  white-space:nowrap;
}
.badge-dot { width:6px; height:6px; background:var(--c-green); border-radius:50%; box-shadow:0 0 6px var(--c-green); flex-shrink:0; animation:pulseBadge 2s ease-in-out infinite; }
@keyframes pulseBadge { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.5;transform:scale(1.3)} }

.hero-title { font-size:clamp(2rem,7vw,3.8rem); font-weight:800; line-height:1.1; letter-spacing:-0.03em; margin-bottom:1.1rem; }
.gradient-text { background:linear-gradient(135deg,var(--c-accent-2) 0%,var(--c-accent-3) 50%,#e879f9 100%); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.hero-subtitle { font-size:clamp(0.88rem,3vw,1.05rem); color:var(--c-muted); max-width:500px; margin:0 auto 2.25rem; font-weight:300; line-height:1.7; }

/* ---------- Card ---------- */
.card {
  background:rgba(255,255,255,0.04); border:1px solid var(--c-border);
  border-radius:var(--radius); backdrop-filter:blur(20px); -webkit-backdrop-filter:blur(20px);
  box-shadow:var(--shadow);
}

/* ---------- Generator Card ---------- */
.generator-card { width:100%; padding:1.5rem; display:flex; flex-direction:column; gap:1.2rem; }

/* Input */
.input-group { display:flex; flex-direction:column; gap:0.4rem; }
.input-label { display:flex; align-items:center; gap:0.4rem; font-size:0.75rem; font-weight:600; color:var(--c-muted); text-transform:uppercase; letter-spacing:0.06em; }
.input-wrapper { position:relative; display:flex; align-items:center; }
.url-input {
  width:100%; padding:0.82rem 2.7rem 0.82rem 0.95rem;
  background:rgba(255,255,255,0.06); border:1px solid var(--c-border);
  border-radius:var(--radius-sm); color:var(--c-text);
  font-family:'Outfit',sans-serif; font-size:0.92rem; outline:none;
  transition:all var(--tr); caret-color:var(--c-accent-2); -webkit-appearance:none;
}
.url-input::placeholder { color:rgba(241,240,255,0.2); }
.url-input:focus { border-color:rgba(220,38,38,.6); background:rgba(220,38,38,.07); box-shadow:0 0 0 3px rgba(220,38,38,.14); }
.url-input.error { border-color:rgba(239,68,68,.6); box-shadow:0 0 0 3px rgba(239,68,68,.12); }
.clear-btn { position:absolute; right:0.65rem; background:none; border:none; color:var(--c-muted); cursor:pointer; padding:0.28rem; border-radius:50%; display:flex; align-items:center; justify-content:center; transition:all var(--tr); opacity:0; pointer-events:none; }
.clear-btn.visible { opacity:1; pointer-events:all; }
.clear-btn:hover { color:var(--c-text); background:rgba(255,255,255,.1); }
.input-hint { font-size:0.76rem; color:var(--c-muted); transition:color var(--tr); }
.input-hint.error-text { color:#ef4444; }

/* Options grid */
.options-grid { display:grid; grid-template-columns:1fr 1fr; gap:1.1rem; }
.full-width { grid-column:1/-1; }

.option-group { display:flex; flex-direction:column; gap:0.4rem; }
.option-label { font-size:0.73rem; font-weight:600; color:var(--c-muted); text-transform:uppercase; letter-spacing:0.06em; display:flex; align-items:center; gap:0.4rem; }
.option-badge { font-size:0.65rem; background:rgba(239,68,68,.18); color:var(--c-accent-3); border:1px solid rgba(239,68,68,.3); border-radius:999px; padding:0.1rem 0.5rem; letter-spacing:0.02em; text-transform:none; font-weight:500; }

/* Size buttons */
.size-buttons { display:flex; gap:0.3rem; }
.size-btn { width:36px; height:36px; border:1px solid var(--c-border); background:rgba(255,255,255,.04); color:var(--c-muted); border-radius:var(--radius-sm); cursor:pointer; font-family:'Outfit',sans-serif; font-size:0.78rem; font-weight:600; transition:all var(--tr); -webkit-appearance:none; }
.size-btn:hover { border-color:var(--c-accent); color:var(--c-text); background:rgba(220,38,38,.1); }
.size-btn.active { border-color:var(--c-accent-2); background:rgba(220,38,38,.2); color:var(--c-accent-3); box-shadow:0 0 10px rgba(220,38,38,.3); }

/* Color row */
.color-row { display:flex; gap:0.7rem; align-items:center; }
.color-item { display:flex; flex-direction:column; align-items:center; gap:0.28rem; }
.color-swatch-label { cursor:pointer; position:relative; display:block; }
.color-picker { position:absolute; width:0; height:0; opacity:0; pointer-events:none; }
.color-preview { display:block; width:36px; height:36px; border-radius:var(--radius-sm); border:2px solid rgba(255,255,255,.15); transition:all var(--tr); box-shadow:inset 0 0 0 1px rgba(0,0,0,.3); }
.color-preview:hover { transform:scale(1.1); box-shadow:0 0 12px rgba(220,38,38,.4); }
.color-name { font-size:0.66rem; color:var(--c-muted); }

/* Style buttons (dot/corner) */
.style-buttons { display:flex; gap:0.5rem; flex-wrap:wrap; }
.style-btn {
  display:flex; flex-direction:column; align-items:center; gap:0.3rem;
  padding:0.55rem 0.75rem; border:1px solid var(--c-border-2);
  background:rgba(255,255,255,.03); border-radius:var(--radius-sm);
  color:var(--c-muted); cursor:pointer; font-family:'Outfit',sans-serif;
  font-size:0.68rem; font-weight:600; transition:all var(--tr);
  -webkit-appearance:none;
}
.style-btn svg { fill:currentColor; }
.style-btn span { white-space:nowrap; }
.style-btn:hover { border-color:var(--c-accent); color:var(--c-text); background:rgba(220,38,38,.08); }
.style-btn.active { border-color:var(--c-accent-2); background:rgba(220,38,38,.18); color:var(--c-accent-3); box-shadow:0 0 10px rgba(220,38,38,.25); }

/* Corner style btn — SVG stroke not fill */
#cornerStyleButtons .style-btn svg { fill:none; stroke:currentColor; }

/* Logo upload */
.logo-upload-area {
  border:1.5px dashed var(--c-border); border-radius:var(--radius-sm);
  background:rgba(255,255,255,.02); transition:all 0.25s ease;
  position:relative; overflow:hidden;
}
.logo-upload-area:hover { border-color:var(--c-accent-2); background:rgba(220,38,38,.05); }
.logo-upload-idle {
  display:flex; align-items:center; gap:0.75rem; padding:0.85rem 1rem;
  pointer-events:none; color:var(--c-muted); font-size:0.82rem;
}
.logo-upload-idle svg { flex-shrink:0; color:var(--c-accent-2); opacity:0.7; }
.file-input-hidden { position:absolute; inset:0; opacity:0; width:100%; height:100%; cursor:pointer; z-index:1; }
.pick-logo-btn {
  pointer-events:all; margin-left:auto; padding:0.38rem 0.9rem;
  background:rgba(220,38,38,.15); border:1px solid rgba(220,38,38,.4);
  border-radius:999px; color:var(--c-accent-3); font-family:'Outfit',sans-serif;
  font-size:0.75rem; font-weight:600; cursor:pointer; transition:all var(--tr);
  white-space:nowrap; position:relative; z-index:2;
}
.pick-logo-btn:hover { background:rgba(220,38,38,.28); color:white; }

.logo-upload-preview {
  display:flex; align-items:center; gap:0.9rem; padding:0.75rem 1rem;
}
.logo-preview-img { width:44px; height:44px; object-fit:contain; border-radius:var(--radius-sm); border:1px solid var(--c-border); background:#fff; }
.logo-preview-info { display:flex; flex-direction:column; gap:0.3rem; flex:1; min-width:0; }
.logo-file-name { font-size:0.8rem; color:var(--c-text); font-weight:500; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.remove-logo-btn {
  display:inline-flex; align-items:center; gap:0.3rem; width:fit-content;
  background:rgba(239,68,68,.12); border:1px solid rgba(239,68,68,.3);
  color:#ef4444; font-family:'Outfit',sans-serif; font-size:0.72rem;
  font-weight:600; padding:0.25rem 0.6rem; border-radius:999px;
  cursor:pointer; transition:all var(--tr);
}
.remove-logo-btn:hover { background:rgba(239,68,68,.25); }

/* ---------- Generate Button ---------- */
.generate-btn {
  width:100%; padding:0.95rem 2rem;
  background:linear-gradient(135deg,var(--c-accent) 0%,var(--c-accent-2) 100%);
  border:none; border-radius:var(--radius-sm); color:white;
  font-family:'Outfit',sans-serif; font-size:1rem; font-weight:700;
  cursor:pointer; display:flex; align-items:center; justify-content:center;
  gap:0.55rem; transition:all var(--tr); position:relative; overflow:hidden;
  -webkit-appearance:none; touch-action:manipulation;
}
.generate-btn::before { content:''; position:absolute; inset:0; background:linear-gradient(135deg,rgba(255,255,255,.12),transparent); opacity:0; transition:opacity var(--tr); }
.generate-btn:hover { transform:translateY(-2px); box-shadow:0 8px 28px rgba(220,38,38,.5); }
.generate-btn:hover::before { opacity:1; }
.generate-btn:active { transform:translateY(0); }
.btn-icon { display:flex; align-items:center; transition:transform var(--tr); }
.generate-btn:hover .btn-icon { transform:translateX(3px); }

/* ---------- QR Result ---------- */
.qr-result { width:100%; margin-top:1.5rem; animation:slideUp 0.4s cubic-bezier(0.4,0,0.2,1); }
.qr-result.hidden { display:none; }
@keyframes slideUp { from{opacity:0;transform:translateY(16px)} to{opacity:1;transform:translateY(0)} }

.qr-card { padding:1.5rem; display:flex; flex-direction:column; gap:1.1rem; position:relative; }
.qr-card::before {
  content:''; position:absolute; inset:-1px; border-radius:calc(var(--radius) + 1px);
  background:linear-gradient(135deg,rgba(220,38,38,.4),rgba(239,68,68,.1),rgba(220,38,38,.4));
  z-index:-1; animation:borderGlow 4s ease-in-out infinite;
}
@keyframes borderGlow { 0%,100%{opacity:.5} 50%{opacity:1} }

.qr-card-header { display:flex; align-items:center; justify-content:space-between; }
.qr-status { display:flex; align-items:center; gap:0.45rem; font-size:0.8rem; font-weight:600; color:var(--c-green); }
.status-dot { width:7px; height:7px; background:var(--c-green); border-radius:50%; box-shadow:0 0 6px var(--c-green); flex-shrink:0; }
.status-dot.pulse { animation:pulseGreen 2s ease-in-out infinite; }
@keyframes pulseGreen { 0%,100%{box-shadow:0 0 4px var(--c-green);transform:scale(1)} 50%{box-shadow:0 0 10px var(--c-green);transform:scale(1.2)} }

.icon-btn { display:flex; align-items:center; justify-content:center; width:32px; height:32px; background:rgba(255,255,255,.06); border:1px solid var(--c-border); border-radius:var(--radius-sm); color:var(--c-muted); cursor:pointer; transition:all var(--tr); flex-shrink:0; }
.icon-btn:hover { color:var(--c-text); background:rgba(255,255,255,.12); border-color:var(--c-accent); }

.qr-display-area { display:flex; justify-content:center; }
.qr-container { padding:1rem; background:white; border-radius:var(--radius-sm); box-shadow:0 0 36px rgba(220,38,38,.2); display:inline-flex; align-items:center; justify-content:center; animation:popIn 0.35s cubic-bezier(0.34,1.56,0.64,1); max-width:100%; overflow:hidden; }
@keyframes popIn { from{transform:scale(0.8);opacity:0} to{transform:scale(1);opacity:1} }

/* qr-code-styling renders a canvas or svg inside */
.qr-container canvas,
.qr-container svg { display:block; max-width:100%; height:auto; }

.qr-url-display { background:rgba(255,255,255,.04); border:1px solid var(--c-border-2); border-radius:var(--radius-sm); padding:0.6rem 0.85rem; font-size:0.78rem; color:var(--c-muted); word-break:break-all; font-family:'SF Mono','Fira Code',monospace; line-height:1.5; }

/* Action buttons */
.action-buttons { display:grid; grid-template-columns:1fr auto auto; gap:0.55rem; }
.action-btn { display:flex; align-items:center; justify-content:center; gap:0.4rem; padding:0.68rem 0.85rem; border-radius:var(--radius-sm); font-family:'Outfit',sans-serif; font-size:0.82rem; font-weight:600; cursor:pointer; transition:all var(--tr); border:1px solid transparent; white-space:nowrap; -webkit-appearance:none; touch-action:manipulation; }
.action-btn.primary { background:linear-gradient(135deg,var(--c-accent),var(--c-accent-2)); color:white; }
.action-btn.primary:hover { transform:translateY(-1px); box-shadow:0 6px 18px rgba(220,38,38,.4); }
.action-btn.secondary { background:rgba(255,255,255,.06); color:var(--c-muted); border-color:var(--c-border); }
.action-btn.secondary:hover { color:var(--c-text); background:rgba(255,255,255,.1); border-color:rgba(255,255,255,.2); }
.action-btn.success { background:rgba(34,197,94,.15); color:var(--c-green); border-color:rgba(34,197,94,.3); }

/* ---------- Features ---------- */
.features-section { padding:5rem 1rem; max-width:1100px; margin:0 auto; position:relative; z-index:1; }
.section-header { text-align:center; margin-bottom:2.75rem; }
.section-title { font-size:clamp(1.8rem,5vw,2.8rem); font-weight:800; letter-spacing:-0.03em; margin-bottom:0.6rem; }
.section-subtitle { font-size:0.98rem; color:var(--c-muted); font-weight:300; }
.features-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:1rem; }
.feature-card { background:rgba(255,255,255,.03); border:1px solid var(--c-border-2); border-radius:var(--radius); padding:1.6rem; transition:all 0.3s ease; position:relative; overflow:hidden; }
.feature-card::before { content:''; position:absolute; inset:0; background:linear-gradient(135deg,rgba(220,38,38,.05),transparent); opacity:0; transition:opacity 0.3s ease; }
.feature-card:hover { border-color:rgba(220,38,38,.3); transform:translateY(-4px); box-shadow:0 16px 40px rgba(0,0,0,.4),0 0 24px rgba(220,38,38,.1); }
.feature-card:hover::before { opacity:1; }
.feature-icon { font-size:1.9rem; margin-bottom:0.8rem; filter:drop-shadow(0 0 8px rgba(239,68,68,.5)); }
.feature-card h3 { font-size:1rem; font-weight:700; margin-bottom:0.45rem; letter-spacing:-0.01em; }
.feature-card p { font-size:0.86rem; color:var(--c-muted); line-height:1.65; font-weight:300; }

/* ---------- FAQ ---------- */
.faq-section { padding:3rem 1rem 5rem; max-width:700px; margin:0 auto; position:relative; z-index:1; }
.faq-list { display:flex; flex-direction:column; gap:0.55rem; }
.faq-item { background:rgba(255,255,255,.03); border:1px solid var(--c-border-2); border-radius:var(--radius-sm); overflow:hidden; transition:border-color 0.2s ease; }
.faq-item[open] { border-color:rgba(220,38,38,.3); background:rgba(220,38,38,.05); }
.faq-question { list-style:none; padding:0.95rem 1.2rem; cursor:pointer; font-size:0.92rem; font-weight:600; display:flex; align-items:center; justify-content:space-between; gap:1rem; user-select:none; }
.faq-question::-webkit-details-marker { display:none; }
.faq-question::after { content:'+'; font-size:1.3rem; font-weight:300; color:var(--c-accent-2); flex-shrink:0; transition:transform 0.2s ease; }
details[open] .faq-question::after { transform:rotate(45deg); }
.faq-answer { padding:0 1.2rem 1rem; font-size:0.86rem; color:var(--c-muted); line-height:1.7; font-weight:300; }

/* ---------- Footer ---------- */
.footer { border-top:1px solid var(--c-border-2); padding:2.5rem 1rem; text-align:center; position:relative; z-index:1; }
.footer-inner { max-width:600px; margin:0 auto; display:flex; flex-direction:column; align-items:center; gap:0.6rem; }
.footer .logo { justify-content:center; }
.footer-tagline { font-size:0.84rem; color:var(--c-muted); font-weight:300; }
.footer-copy { font-size:0.74rem; color:rgba(241,240,255,.2); }

/* ---------- Utility ---------- */
.hidden { display:none !important; }

/* =========================================
   RESPONSIVE
   ========================================= */

@media (max-width: 768px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  /* ---- Header ---- */
  .header { padding: 0.65rem 0.85rem; gap: 0.35rem; }
  .logo-text { font-size: 0.9rem; }
  .nav-pill { font-size: 0.68rem; padding: 0.26rem 0.45rem; }

  /* ---- Hero ---- */
  .hero { padding: 2.5rem 0.85rem 3rem; }
  .hero-badge { font-size: 0.68rem; padding: 0.26rem 0.7rem; }

  /* ---- Generator card ---- */
  .generator-card { padding: 1.1rem; gap: 1rem; }

  /* Options grid: single column */
  .options-grid { grid-template-columns: 1fr; gap: 0.9rem; }

  /* Size + colors side by side in same row */
  .options-grid > .option-group:not(.full-width) {
    display: inline-flex;
  }
  /* Put size and color in a 2-col sub-grid */
  .options-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto auto;
  }
  .options-grid > .option-group:nth-child(1) { grid-column: 1; grid-row: 1; }
  .options-grid > .option-group:nth-child(2) { grid-column: 2; grid-row: 1; }
  .options-grid > .option-group.full-width    { grid-column: 1 / -1; }

  /* ---- Style buttons: 3-column wrap grid ---- */
  .style-buttons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.4rem;
    flex-wrap: unset;
    overflow-x: unset;
  }

  .style-btn {
    padding: 0.5rem 0.3rem;
    font-size: 0.64rem;
    width: 100%;
  }

  .style-btn svg {
    width: 22px;
    height: 22px;
  }

  /* Corner style: 3 buttons full row */
  #cornerStyleButtons {
    grid-template-columns: repeat(3, 1fr);
  }

  /* ---- Size buttons ---- */
  .size-buttons { gap: 0.28rem; }
  .size-btn { width: 34px; height: 34px; font-size: 0.75rem; }

  /* ---- Color swatches ---- */
  .color-preview { width: 34px; height: 34px; }

  /* ---- Logo upload ---- */
  .logo-upload-idle { flex-wrap: wrap; gap: 0.45rem; padding: 0.7rem 0.85rem; }
  .pick-logo-btn { margin-left: 0; }

  /* ---- Action buttons ---- */
  .action-buttons { grid-template-columns: 1fr 1fr; gap: 0.45rem; }
  .action-btn.primary { grid-column: 1 / -1; }
  .action-btn { padding: 0.62rem 0.7rem; font-size: 0.8rem; }

  /* ---- QR result ---- */
  .qr-card { padding: 1.1rem; gap: 0.9rem; }
  .qr-container { padding: 0.75rem; }
  .qr-container canvas,
  .qr-container svg {
    max-width: min(260px, calc(100vw - 4.5rem)) !important;
    height: auto !important;
  }

  /* ---- Features ---- */
  .features-grid { grid-template-columns: 1fr; }
  .feature-card { padding: 1.2rem; }

  /* ---- FAQ ---- */
  .faq-question { font-size: 0.88rem; padding: 0.85rem 1rem; }
}

@media (max-width: 380px) {
  .hero-title { font-size: 1.75rem; }
  .nav-pill { font-size: 0.62rem; padding: 0.22rem 0.38rem; }
  .action-buttons { grid-template-columns: 1fr; }
  .style-btn { padding: 0.42rem 0.25rem; }
  .style-btn svg { width: 20px; height: 20px; }
}