:root {
  color-scheme: light dark;
  --bg: #0f172a;
  --surface: rgba(255, 255, 255, 0.9);
  --surface-strong: #ffffff;
  --surface-dark: rgba(15, 23, 42, 0.88);
  --text: #0f172a;
  --text-soft: #475569;
  --text-on-dark: #e2e8f0;
  --accent: #2563eb;
  --border: rgba(148, 163, 184, 0.25);
  --shadow: 0 18px 50px rgba(2, 6, 23, 0.14);
  --radius: 24px;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at top right, rgba(37, 99, 235, 0.25), transparent 35%),
    linear-gradient(180deg, #06111f 0%, #0f172a 100%);
  color: var(--text-on-dark);
}

body {
  line-height: 1.5;
}

a { color: inherit; }

.page-shell {
  max-width: 1480px;
  margin: 0 auto;
  padding: 1rem 1rem 4rem;
}

.hero-card,
.controls-card,
.widget-card,
.info-card,
.embed-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  border-radius: var(--radius);
}

.hero-card {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 1.25rem;
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.eyebrow {
  margin: 0 0 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  color: #93c5fd;
  font-weight: 700;
}

h1, h2, h3 { margin: 0 0 0.75rem; }
h1 { font-size: clamp(1.8rem, 2vw + 1rem, 3rem); }
h2 { font-size: 1.2rem; }
h3 { font-size: 1rem; }

.lede {
  margin: 0;
  max-width: 68ch;
  color: rgba(226, 232, 240, 0.92);
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: flex-end;
  align-content: flex-start;
}

.btn {
  appearance: none;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #fff;
  text-decoration: none;
  padding: 0.82rem 1.2rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.18s ease, opacity 0.18s ease;
}

.btn:hover { transform: translateY(-1px); }
.btn-secondary { background: rgba(255, 255, 255, 0.14); }
.btn-full { width: 100%; }

.layout-grid {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 1rem;
  align-items: start;
}

.widget-stack {
  display: grid;
  gap: 1rem;
  min-width: 0;
}

.controls-card,
.widget-card,
.info-card,
.embed-card {
  padding: 1.2rem;
}

.control-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem;
}

.top-gap {
  margin-top: 0.75rem;
}

label {
  display: grid;
  gap: 0.35rem;
  font-weight: 600;
  color: #e2e8f0;
}

input,
select,
textarea {
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(15, 23, 42, 0.75);
  color: #fff;
  padding: 0.85rem 0.95rem;
  font: inherit;
}

textarea {
  resize: vertical;
}

.toggle-row {
  display: grid;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.toggle {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 600;
}

.toggle input {
  width: 1rem;
  height: 1rem;
  margin: 0;
}

.button-row {
  display: grid;
  gap: 0.75rem;
}

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

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.chip-button {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(15, 23, 42, 0.55);
  color: #fff;
  border-radius: 999px;
  padding: 0.55rem 0.8rem;
  font: inherit;
  cursor: pointer;
}

.panel-title {
  margin: 0;
}

.divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.12);
  margin: 1rem 0;
}

.status-text,
.embed-note {
  margin: 0;
  color: rgba(226, 232, 240, 0.78);
  font-size: 0.92rem;
}

.embed-output {
  width: 100%;
  min-height: 220px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.info-card {
  margin-top: 1rem;
}

.info-card ul {
  margin: 0;
  padding-left: 1.1rem;
  color: rgba(226, 232, 240, 0.94);
}

.widget-card,
.embed-card {
  min-width: 0;
}

@media (max-width: 1080px) {
  .layout-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 960px) {
  .hero-card {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 560px) {
  .button-row.two {
    grid-template-columns: 1fr;
  }
}