:root {
  --bg: #f6f8f6;
  --ink: #0f1722;
  --muted: #5a6678;
  --brand: #0557ff;
  --brand-2: #12b886;
  --card: #ffffff;
  --line: #d4dce8;
  --shadow: 0 20px 55px rgba(6, 36, 69, 0.12);
  --soft: #eef3fb;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Manrope, sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 10% 0%, #ebfff4 0%, #f6f8f6 50%) no-repeat;
  min-height: 100vh;
  position: relative;
}

.bg-mesh {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 80% 10%, rgba(5, 87, 255, 0.1), transparent 45%),
    radial-gradient(circle at 20% 65%, rgba(18, 184, 134, 0.12), transparent 40%);
  z-index: 0;
}

.site-header, main, footer { position: relative; z-index: 1; }

.site-header {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px 20px 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand { display: flex; align-items: center; gap: 12px; }

.brand-mark {
  width: 42px; height: 42px;
  border-radius: 10px;
  display: grid; place-items: center;
  color: #fff;
  font-weight: 700;
  font-family: "Space Grotesk", sans-serif;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
}

.brand h1 { font-family: "Space Grotesk", sans-serif; margin: 0; font-size: 1.2rem; }
.brand p { margin: 0; color: var(--muted); font-size: 0.82rem; }

.cta { text-decoration: none; font-weight: 700; color: var(--brand); }

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 6px 20px 40px;
  display: grid;
  gap: 18px;
}

.hero {
  background: linear-gradient(135deg, #ffffff, #f5fbff);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 30px;
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--brand);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.75rem;
}

.hero h2 {
  font-family: "Space Grotesk", sans-serif;
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2.6rem);
  line-height: 1.15;
  max-width: 22ch;
}

.lead { color: var(--muted); margin-top: 10px; max-width: 66ch; }

.hero-actions { margin-top: 18px; display: flex; gap: 10px; flex-wrap: wrap; }

.btn { text-decoration: none; border-radius: 12px; font-weight: 700; padding: 10px 16px; border: none; cursor: pointer; font: inherit; }
.btn.primary { background: var(--ink); color: #fff; }
.btn.primary:disabled { background: #9aa6b8; cursor: not-allowed; }
.btn.ghost { background: transparent; border: 1px solid var(--line); color: var(--ink); }
.btn.ghost:disabled { color: #9aa6b8; cursor: not-allowed; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px;
  box-shadow: var(--shadow);
}

.card h3 { margin: 0; font-family: "Space Grotesk", sans-serif; }

.studio-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.pill {
  background: var(--soft);
  color: var(--brand);
  font-weight: 700;
  font-size: 0.78rem;
  padding: 6px 12px;
  border-radius: 999px;
}
.pill.ok { background: #e7faf1; color: #0d8a55; }
.pill.err { background: #fde9e9; color: #c62828; }

.steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 20px;
}

.step {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 14px;
  align-items: start;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}
.step:first-child { border-top: none; padding-top: 0; }

.step-num {
  width: 32px; height: 32px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #fff;
  font-weight: 700;
  border-radius: 50%;
}

.step-body { display: grid; gap: 10px; }
.step-help { margin: 0; color: var(--muted); font-size: 0.9rem; }

label { font-size: 0.85rem; font-weight: 700; }

select, input[type="text"], input[type="file"] {
  font: inherit;
  border-radius: 10px;
  border: 1px solid var(--line);
  padding: 10px 12px;
  background: #fff;
}

.rules-panel {
  margin-top: 6px;
  padding: 12px 14px;
  background: var(--soft);
  border-radius: 10px;
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--ink);
}

.rules-panel strong { color: var(--brand); }

.source-tabs { display: flex; gap: 6px; }
.tab {
  flex: 0 0 auto;
  padding: 8px 16px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 10px;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  color: var(--muted);
}
.tab.active { background: var(--ink); color: #fff; border-color: var(--ink); }

.pane { display: none; }
.pane.active { display: block; }

.dropzone {
  display: grid;
  place-items: center;
  gap: 4px;
  padding: 36px 16px;
  text-align: center;
  border: 2px dashed var(--line);
  border-radius: 14px;
  cursor: pointer;
  transition: background 150ms ease, border-color 150ms ease;
  background: #fafcff;
}
.dropzone.dragover { background: #eef5ff; border-color: var(--brand); }
.dropzone strong { font-family: "Space Grotesk", sans-serif; font-size: 1rem; }
.dropzone span { color: var(--muted); font-size: 0.85rem; }

#videoPreview {
  width: 100%;
  max-height: 360px;
  background: #000;
  border-radius: 12px;
  display: block;
}

.camera-hint {
  margin: 0;
  padding: 10px 12px;
  border-radius: 10px;
  background: #f5f7fc;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.45;
}

.camera-actions { display: flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
.btn-secondary {
  font: inherit;
  font-weight: 700;
  padding: 9px 14px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
  cursor: pointer;
}
.btn-secondary:disabled { opacity: 0.5; cursor: not-allowed; }

.preview-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.preview-block { display: grid; gap: 6px; }
.preview-label { margin: 0; color: var(--muted); font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; }

.preview-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 35 / 45;
  background: #f1f4f9;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  display: grid;
  place-items: center;
}
.preview-frame img,
.preview-frame canvas {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}
.preview-frame img[src=""],
.preview-frame img:not([src]) { display: none; }
.placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 0.85rem;
  pointer-events: none;
}
.preview-frame.has-content .placeholder { display: none; }

.output-meta {
  font-size: 0.78rem;
  color: var(--muted);
}

.controls {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 10px 14px;
  align-items: center;
  padding: 14px;
  background: var(--soft);
  border-radius: 10px;
}
.controls input[type="range"] { width: 100%; }
.controls input[type="color"] { width: 60px; height: 36px; padding: 0; border-radius: 8px; border: 1px solid var(--line); background: none; cursor: pointer; }
.controls input[type="color"]:disabled { cursor: not-allowed; opacity: 0.75; }

.action-row { display: flex; gap: 10px; flex-wrap: wrap; }

.status-line { margin: 0; font-size: 0.88rem; color: var(--muted); min-height: 1.2em; }
.status-line.ok { color: #0d8a55; }
.status-line.err { color: #c62828; }

.how-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-top: 8px;
}
.how-grid h4 { font-family: "Space Grotesk", sans-serif; margin: 0 0 4px; }
.how-grid p { margin: 0; color: var(--muted); font-size: 0.88rem; }

footer {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px 30px;
  color: var(--muted);
  font-size: 0.88rem;
}

.reveal { opacity: 0; transform: translateY(20px); animation: reveal-up 560ms ease forwards; }
.stagger-1 { animation-delay: 120ms; }
.stagger-2 { animation-delay: 220ms; }

@keyframes reveal-up { to { opacity: 1; transform: translateY(0); } }

@media (min-width: 760px) {
  .preview-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .site-header { flex-direction: column; align-items: flex-start; gap: 12px; }
  .hero { padding: 22px; }
  .card { padding: 18px; }
  .controls { grid-template-columns: 1fr; }
}