:root {
  color-scheme: dark;
  --bg: #07111f;
  --panel: rgba(10, 18, 32, 0.78);
  --panel-strong: rgba(13, 24, 43, 0.96);
  --line: rgba(255, 255, 255, 0.1);
  --text: #eff4ff;
  --muted: #9fb0cb;
  --accent: #6ee7ff;
  --accent-2: #8bffb0;
  --danger: #ff7a7a;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  --radius: 24px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(69, 116, 255, 0.18), transparent 28%),
    radial-gradient(circle at right center, rgba(91, 255, 187, 0.14), transparent 24%),
    linear-gradient(180deg, #050b16 0%, #08131f 55%, #050b12 100%);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

.backdrop {
  position: fixed;
  inset: auto;
  border-radius: 999px;
  filter: blur(50px);
  opacity: 0.38;
  pointer-events: none;
}

.backdrop-a {
  width: 320px;
  height: 320px;
  left: -80px;
  top: -60px;
  background: #2a68ff;
}

.backdrop-b {
  width: 260px;
  height: 260px;
  right: -70px;
  bottom: 8%;
  background: #35e08a;
}

.shell {
  width: min(1100px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 36px 0 48px;
  position: relative;
  z-index: 1;
}

.hero {
  margin-bottom: 22px;
}

.eyebrow {
  display: inline-flex;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 12px;
  margin: 0 0 14px;
  background: rgba(255, 255, 255, 0.03);
}

h1 {
  margin: 0;
  max-width: 14ch;
  font-size: clamp(2.4rem, 5vw, 5.2rem);
  line-height: 0.96;
  letter-spacing: -0.06em;
}

.lede {
  max-width: 60ch;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

.panel {
  background: linear-gradient(180deg, rgba(12, 20, 36, 0.95), rgba(7, 14, 26, 0.94));
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 32px;
  box-shadow: var(--shadow);
  padding: 20px;
  backdrop-filter: blur(18px);
}

.stepbar {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 18px;
}

.step {
  padding: 12px 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  border: 1px solid transparent;
}

.step.active {
  color: var(--text);
  border-color: rgba(110, 231, 255, 0.25);
  background: rgba(110, 231, 255, 0.08);
}

.uploader {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(280px, 1fr);
  gap: 16px;
}

.upload-zone {
  display: grid;
  align-content: center;
  min-height: 260px;
  padding: 22px;
  border: 1.5px dashed rgba(255, 255, 255, 0.18);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.03);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.upload-zone::after {
  content: "";
  position: absolute;
  inset: 12px;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  pointer-events: none;
}

.upload-zone input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.upload-copy {
  display: grid;
  gap: 8px;
  z-index: 1;
}

.upload-copy strong {
  font-size: 1.2rem;
}

.upload-copy span {
  color: var(--muted);
}

.preview-wrap {
  position: relative;
  min-height: 260px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.03);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.preview-wrap img,
.preview-placeholder {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.preview-placeholder {
  display: grid;
  place-items: center;
  padding: 24px;
  color: var(--muted);
  text-align: center;
}

.actions {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

button {
  appearance: none;
  border: 0;
  font: inherit;
  color: inherit;
  border-radius: 16px;
  transition: transform 0.15s ease, opacity 0.15s ease, border-color 0.15s ease,
    background 0.15s ease;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

button:not(:disabled):hover {
  transform: translateY(-1px);
}

.primary,
.secondary,
.idea-card,
.selection-panel {
  border: 1px solid rgba(255, 255, 255, 0.09);
}

.primary {
  background: linear-gradient(135deg, #63e6ff, #7bffb2);
  color: #04111a;
  font-weight: 700;
  padding: 14px 18px;
}

.secondary {
  background: rgba(255, 255, 255, 0.05);
  padding: 14px 18px;
}

.status {
  min-height: 24px;
  margin: 14px 2px 0;
  color: var(--muted);
}

.status.error {
  color: var(--danger);
}

.results,
.instructions {
  margin-top: 20px;
}

.summary-card,
.instruction-card,
.selection-panel {
  background: var(--panel);
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid var(--line);
}

.summary-card h2,
.ideas-head h2,
.instructions h2,
.instruction-card h3 {
  margin: 0 0 10px;
}

.summary-card p,
.ideas-head p,
.instruction-card p,
.selection-panel p {
  color: var(--muted);
  line-height: 1.6;
}

.chips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.chip,
.badge {
  display: inline-flex;
  align-items: center;
  padding: 7px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text);
  font-size: 0.9rem;
}

.ideas-head {
  margin: 24px 2px 12px;
}

.ideas-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.idea-card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.03));
  padding: 16px;
  text-align: left;
  display: grid;
  gap: 10px;
  min-height: 170px;
}

.idea-card.active {
  border-color: rgba(110, 231, 255, 0.36);
  background: linear-gradient(180deg, rgba(110, 231, 255, 0.14), rgba(123, 255, 178, 0.08));
}

.idea-index {
  color: var(--accent);
  font-size: 0.85rem;
}

.idea-card h3 {
  margin: 0;
  font-size: 1.1rem;
}

.idea-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.idea-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: auto;
}

.badge-soft {
  background: rgba(110, 231, 255, 0.08);
  color: var(--accent);
}

.selection-panel {
  margin-top: 14px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}

.selection-label {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 12px;
  color: var(--accent);
  margin: 0 0 8px;
}

.instruction-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.instruction-columns ul,
.instruction-columns ol {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.instruction-columns li + li {
  margin-top: 8px;
}

@media (max-width: 860px) {
  .uploader,
  .ideas-grid,
  .instruction-columns,
  .selection-panel {
    grid-template-columns: 1fr;
  }

  .uploader {
    display: grid;
  }

  .selection-panel {
    display: grid;
    justify-content: stretch;
  }

  .shell {
    width: min(100vw - 20px, 1100px);
    padding: 18px 0 28px;
  }

  .panel {
    padding: 14px;
    border-radius: 26px;
  }

  h1 {
    max-width: 12ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto;
    transition: none !important;
  }
}