:root {
  color-scheme: dark;
  font-family: Inter, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
  font-weight: 400;
  --bg: #020617;
  --panel: rgba(15, 23, 42, 0.7);
  --border: rgba(255, 255, 255, 0.15);
  --text: #f8fafc;
  --muted: #cbd5e1;
  --accent: #4f46e5;
  --accent-two: #8b5cf6;
  --success: #22c55e;
  --alert: #f97316;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top left, rgba(79, 70, 229, 0.3), transparent 22%), linear-gradient(135deg, #020617 0%, #111827 100%);
  color: var(--text);
}

button,
textarea,
input,
a {
  font: inherit;
}

.app-shell {
  width: min(1180px, calc(100% - 1.5rem));
  margin: 0 auto;
  padding: 1rem 0 2rem;
}

.glass-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  box-shadow: 0 18px 48px rgba(2, 6, 23, 0.3);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
}

.topbar {
  border-radius: 999px;
  padding: 0.9rem 1.1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
}

.brand-mark {
  width: 2rem;
  height: 2rem;
  border-radius: 0.7rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-two));
  box-shadow: inset 0 0 0 4px rgba(255, 255, 255, 0.18);
  position: relative;
}

.brand-mark::before,
.brand-mark::after {
  content: '';
  position: absolute;
  inset: 0.35rem;
  border: 2px solid rgba(255, 255, 255, 0.9);
  border-radius: 0.4rem;
}

.brand-mark::after {
  inset: 0.75rem;
}

.topnav {
  display: flex;
  gap: 0.85rem;
}

.topnav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}

.hero,
.content-section,
.footer {
  border-radius: 1.7rem;
  padding: 1.2rem;
  margin-bottom: 1rem;
}

.hero {
  display: grid;
  gap: 1.2rem;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  color: #a5b4fc;
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

h1,
h2,
h3,
p {
  margin: 0;
}

.hero h1 {
  font-size: clamp(1.95rem, 4vw, 3.15rem);
  line-height: 1.08;
  margin-bottom: 0.7rem;
}

.hero p {
  color: var(--muted);
  font-size: 1rem;
  max-width: 660px;
}

.hero-actions,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.btn {
  border: 0;
  border-radius: 999px;
  padding: 0.8rem 1.1rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-two));
  color: white;
  box-shadow: 0 12px 24px rgba(79, 70, 229, 0.28);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: white;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1rem;
}

.hero-badges span,
.status-pill {
  border-radius: 999px;
  padding: 0.45rem 0.8rem;
  font-size: 0.82rem;
  background: rgba(255, 255, 255, 0.09);
  color: #e2e8f0;
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.visual-card {
  width: min(100%, 320px);
  padding: 1.2rem;
  border-radius: 1.4rem;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.24), rgba(255, 255, 255, 0.08));
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.visual-qr {
  aspect-ratio: 1;
  border-radius: 1rem;
  background:
    linear-gradient(90deg, transparent 0 14%, #111827 14% 18%, transparent 18% 24%, #111827 24% 28%, transparent 28% 33%, #111827 33% 37%, transparent 37% 43%, #111827 43% 47%, transparent 47% 100%),
    linear-gradient(0deg, transparent 0 14%, #111827 14% 18%, transparent 18% 24%, #111827 24% 28%, transparent 28% 33%, #111827 33% 37%, transparent 37% 43%, #111827 43% 47%, transparent 47% 100%);
  background-size: 100% 100%;
  margin-bottom: 1rem;
}

.visual-pill {
  height: 1rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-two));
  margin-bottom: 0.7rem;
}

.visual-pill.subtle {
  width: 75%;
  background: rgba(255, 255, 255, 0.2);
}

.feature-grid {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: 1fr;
  margin-bottom: 1rem;
}

.feature-card {
  border-radius: 1.2rem;
  padding: 1rem;
}

.feature-card h3 {
  margin-bottom: 0.35rem;
}

.feature-card p {
  color: var(--muted);
}

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.scanner-layout,
.generator-layout {
  display: grid;
  gap: 1rem;
}

.camera-shell {
  position: relative;
  min-height: 320px;
  border-radius: 1.4rem;
  overflow: hidden;
  background: linear-gradient(145deg, rgba(15, 23, 42, 0.95), rgba(30, 41, 59, 0.88));
  border: 1px solid rgba(255, 255, 255, 0.16);
}

#camera-video,
#scanner-canvas {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  min-height: 320px;
}

#scanner-canvas {
  display: none;
}

.overlay-frame {
  position: absolute;
  inset: 1rem;
  border: 2px solid rgba(255, 255, 255, 0.8);
  border-radius: 1rem;
  pointer-events: none;
}

.controls-card,
.generator-panel,
.preview-panel {
  border-radius: 1.2rem;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.result-card {
  margin-top: 1rem;
  padding: 0.9rem;
  border-radius: 1rem;
  background: rgba(15, 23, 42, 0.6);
  color: var(--muted);
}

.result-card h3 {
  margin-bottom: 0.4rem;
}

.field-label {
  display: inline-block;
  margin-bottom: 0.45rem;
  color: #e2e8f0;
}

textarea {
  width: 100%;
  border: 0;
  border-radius: 1rem;
  padding: 0.9rem 1rem;
  background: rgba(2, 6, 23, 0.7);
  color: white;
  resize: vertical;
  min-height: 130px;
}

textarea:focus {
  outline: 2px solid rgba(129, 140, 248, 0.55);
}

#qr-preview {
  width: 100%;
  max-width: 260px;
  display: block;
  margin: 0 auto;
  background: white;
  border-radius: 1rem;
  padding: 1rem;
}

.preview-caption {
  color: var(--muted);
  text-align: center;
  margin-top: 0.85rem;
}

.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--muted);
  flex-wrap: wrap;
  gap: 0.7rem;
}

.status-pill.success {
  background: rgba(34, 197, 94, 0.2);
  color: #bbf7d0;
}

.status-pill.alert {
  background: rgba(249, 115, 22, 0.2);
  color: #fed7aa;
}

.upload-btn {
  position: relative;
  overflow: hidden;
}

@media (min-width: 760px) {
  .hero {
    grid-template-columns: 1.2fr 0.8fr;
    padding: 2rem;
  }

  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .scanner-layout {
    grid-template-columns: 1.2fr 0.8fr;
  }

  .generator-layout {
    grid-template-columns: 1fr 0.9fr;
    align-items: center;
  }
}

@media (min-width: 980px) {
  .app-shell {
    padding-top: 1.4rem;
  }

  .hero,
  .content-section,
  .footer {
    padding: 1.6rem;
  }

  .feature-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}