:root {
  color-scheme: light dark;
  /* Dark theme (default) — softer navy palette */
  --bg: #0c111b; /* main background */
  --bg-alt: rgba(14, 19, 31, 0.92); /* elevated background */
  --fg: #e8eef7; /* primary text */
  --accent: #60a5fa; /* friendly blue */
  --accent-strong: #2563eb; /* strong blue */
  --card-bg: rgba(12, 18, 30, 0.58); /* frosted card */
  --card-border: rgba(148, 163, 184, 0.16);
  --surface: #0f172a; /* code blocks / surfaces */
  --hero-grad-1: rgba(96, 165, 250, 0.28); /* accent wash */
  --hero-grad-2: rgba(99, 102, 241, 0.06); /* subtle indigo */
  --font-body: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* Light theme variables */
:root[data-theme='light'] {
  color-scheme: light;
  --bg: #f8fafc;
  --bg-alt: #ffffff;
  --fg: #0f172a;
  --accent: #2563eb;
  --accent-strong: #1d4ed8;
  --card-bg: #ffffff;
  --card-border: rgba(15, 23, 42, 0.08);
  --surface: #f1f5f9;
  --hero-grad-1: rgba(59, 130, 246, 0.18);
  --hero-grad-2: rgba(14, 165, 233, 0.04);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-body);
  background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.15), transparent 45%),
    radial-gradient(circle at bottom right, rgba(250, 204, 21, 0.08), transparent 50%),
    var(--bg);
  color: var(--fg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

/* Wider layout for the builder page only */
body.builder-page .container.content,
body.builder-page .content.container {
  width: min(1280px, 95%);
}

.hero {
  padding: 3rem 0; /* reduce header height */
  background: linear-gradient(135deg, var(--hero-grad-1), var(--hero-grad-2));
}

.hero__content {
  display: grid;
  gap: 1.1rem; /* slightly tighter */
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.8rem, 5vw, 3.5rem);
  font-weight: 700;
}

.hero h1 .into {
  font-style: italic;
  font-size: 0.5em; /* twice smaller for strong emphasis */
  opacity: 0.9;
}

.hero__tagline {
  margin: 0;
  font-size: 1.1rem;
  line-height: 1.7;
  color: rgba(226, 232, 240, 0.8);
}

/* Light theme tagline contrast */
:root[data-theme='light'] .hero__tagline { color: #334155; }

.hero__cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center; /* center buttons */
}

.btn {
  padding: 0.85rem 1.5rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary {
  background: var(--accent);
  color: #020617;
  box-shadow: 0 15px 40px rgba(96, 165, 250, 0.32);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 44px rgba(96, 165, 250, 0.42);
}

.btn-secondary {
  background: transparent;
  border: 1px solid rgba(148, 163, 184, 0.4);
  color: var(--fg);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Light theme overrides for builder widgets without touching their source CSS */
:root[data-theme='light'] #config-builder .responsive-frame {
  background: #ffffff;
  border-color: rgba(15, 23, 42, 0.1);
}

:root[data-theme='light'] #config-builder .card,
:root[data-theme='light'] .config-builder .card {
  background: #ffffff;
  border-color: rgba(15, 23, 42, 0.1);
}

:root[data-theme='light'] #config-builder .card textarea,
:root[data-theme='light'] #config-builder .card input,
:root[data-theme='light'] #config-builder .atlas-widget__select,
:root[data-theme='light'] #config-builder .form-field input,
:root[data-theme='light'] #config-builder .form-field select,
:root[data-theme='light'] #config-builder .form-field textarea,
:root[data-theme='light'] .config-builder .form-field input,
:root[data-theme='light'] .config-builder .form-field select,
:root[data-theme='light'] .config-builder .form-field textarea {
  background: #ffffff;
  color: #0f172a;
  border-color: rgba(15, 23, 42, 0.15);
}

:root[data-theme='light'] #config-builder .yaml-output,
:root[data-theme='light'] #config-builder .cli-command {
  background: #f8fafc;
  color: #0f172a;
  border-color: rgba(15, 23, 42, 0.12);
}

:root[data-theme='light'] #config-builder .mode-toggle {
  background: #f1f5f9;
  border-color: rgba(15, 23, 42, 0.12);
}

:root[data-theme='light'] #config-builder .toggle--active {
  background: rgba(59, 130, 246, 0.2);
  color: #0f172a;
}

:root[data-theme='light'] #config-builder .selected-item {
  background: rgba(59, 130, 246, 0.15);
  border-color: rgba(59, 130, 246, 0.35);
  color: #1e3a8a;
}

.content {
  flex: 1;
  padding: 3rem 0 5rem;
}

.section-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 1.1rem;
  padding: 1.5rem; /* tighter */
  margin-bottom: 1.5rem; /* tighter */
  box-shadow: 0 16px 44px rgba(8, 14, 26, 0.26);
  backdrop-filter: blur(16px);
}

.section-card h2 {
  margin-top: 0;
  font-size: 1.6rem;
}

.section-grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 900px) {
  .section-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.section-card p {
  margin: 0;
  line-height: 1.7;
  color: rgba(226, 232, 240, 0.75);
}

/* Light theme card paragraph contrast */
:root[data-theme='light'] .section-card p { color: #475569; }

#config-builder {
  margin-top: 0; /* align top spacing with About/Cloud */
}

#config-builder .card-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

#config-builder .card-title span {
  font-size: 0.95rem;
  color: rgba(226, 232, 240, 0.65);
}

/* Light theme subtitle contrast */
:root[data-theme='light'] #config-builder .card-title span { color: #475569; }

.site-footer {
  padding: 2rem 0;
  background: rgba(15, 23, 42, 0.85);
  border-top: 1px solid rgba(148, 163, 184, 0.2);
}

.site-footer p {
  margin: 0.5rem 0;
  color: rgba(226, 232, 240, 0.6);
}

.footnote {
  font-size: 0.85rem;
}

.config-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.yaml-preview {
  background: var(--surface);
  border-radius: 1rem;
  padding: 1rem;
  border: 1px solid rgba(148, 163, 184, 0.2);
  overflow: auto;
  max-height: 400px;
  font-family: 'JetBrains Mono', 'SFMono-Regular', Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
  font-size: 0.85rem;
  line-height: 1.5;
}

.yaml-preview pre {
  margin: 0;
  white-space: pre-wrap;
}

.config-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.tooltip {
  position: relative;
  cursor: help;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translate(-50%, 0.75rem);
  background: var(--surface);
  color: var(--fg);
  padding: 0.6rem 0.8rem;
  border-radius: 0.75rem;
  font-size: 0.8rem;
  line-height: 1.3;
  width: 220px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease;
  border: 1px solid rgba(148, 163, 184, 0.2);
  box-shadow: 0 15px 30px rgba(15, 23, 42, 0.35);
  z-index: 10;
}

.tooltip:hover::after,
.tooltip:focus-visible::after {
  opacity: 1;
}

.responsive-frame {
  background: rgba(12, 18, 30, 0.38);
  border-radius: 1.25rem;
  border: 1px solid rgba(148, 163, 184, 0.2);
  padding: 1.25rem; /* tighter */
  backdrop-filter: blur(12px);
}

/* Cloud page iframe styling */
.embed-frame {
  display: block;
  width: 100%;
  max-width: 100%;
  height: 520px;
  margin: 1rem 0 2rem;
  border: 1px solid var(--card-border);
  border-radius: 1rem;
  background: var(--surface);
  box-shadow: 0 12px 30px rgba(8, 14, 26, 0.22);
}

@media (max-width: 640px) {
  .embed-frame {
    height: 440px;
    margin: 0.75rem 0 1.5rem;
  }
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(96, 165, 250, 0.2);
  color: rgba(219, 234, 254, 0.95);
  border-radius: 999px;
  padding: 0.45rem 0.85rem;
  font-size: 0.8rem;
}

.status-pill::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #60a5fa;
  box-shadow: 0 0 10px rgba(96, 165, 250, 0.9);
}

a.card-link {
  color: inherit;
  display: block;
}

a.card-link:hover h3 {
  color: var(--accent);
}

/* Cloud page button/link alignment and spacing (content area only) */
.cloud-page .content a.btn {
  display: block;
  width: fit-content;
  margin: 1rem auto 0.5rem; /* space above/below and centered */
}

.cloud-page .content a.btn-secondary[href^="http"]::after {
  content: '↗';
  margin-left: 0.4rem;
  opacity: 0.85;
}

/* Center only in content area; footer remains left-aligned */
.cloud-page .content .footnote {
  display: block;
  text-align: center;
  margin-top: 0.25rem;
}

.config-builder-wrapper {
  display: grid;
  gap: 2rem;
}

@media (min-width: 1200px) {
  .config-builder-wrapper {
    grid-template-columns: 3fr 2fr;
  }
}

@media (max-width: 640px) {
  .hero__cta {
    flex-direction: column;
  }

  .config-actions {
    flex-direction: column;
  }
}

aside ul {
  margin: 0;
  padding-left: 1.2rem;
  color: rgba(226, 232, 240, 0.7);
}

aside li {
  margin-bottom: 0.45rem;
}

/* How it works accordion */
details.howto {
  margin-top: 0.75rem;
}
details.howto > summary {
  list-style: none;
  cursor: pointer;
  padding: 0.6rem 0.85rem;
  border-radius: 0.7rem;
  border: 1px solid rgba(148, 163, 184, 0.2);
  background: var(--surface);
  color: var(--fg);
  font-weight: 600;
}
details.howto > summary::marker { display: none; }
details.howto[open] > summary {
  border-color: var(--accent);
  color: var(--accent);
}
details.howto .howto__content {
  margin-top: 0.6rem;
  padding: 0.75rem 0.85rem 0.5rem;
  border-left: 2px solid rgba(148, 163, 184, 0.2);
}

/* Ensure How it works body text has contrast in light theme */
:root[data-theme='light'] details.howto > summary { background: #f8fafc; color: #0f172a; border-color: #e5e7eb; }
:root[data-theme='light'] details.howto[open] > summary { color: #1d4ed8; border-color: #93c5fd; }
:root[data-theme='light'] details.howto .howto__content { border-left-color: #e5e7eb; }
:root[data-theme='light'] details.howto .howto__content li,
:root[data-theme='light'] details.howto .howto__content p,
:root[data-theme='light'] details.howto .howto__content ol,
:root[data-theme='light'] details.howto .howto__content ul { color: #334155; }

/* Unify CLI and Direct CLI look in light theme within the frame */
:root[data-theme='light'] #coord2region-root .cli-command,
:root[data-theme='light'] #coord2region-root .direct-cli { background: #f8fafc; color: #0f172a; border-color: #e5e7eb; }
details.howto--inframe {
  margin-bottom: 1.25rem; /* space before builder UI */
}
details.howto .howto__content ul {
  margin: 0;
  padding-left: 1.2rem;
}
details.howto .howto__content li {
  margin-bottom: 0.45rem;
  color: rgba(226, 232, 240, 0.8);
}
details.howto .howto__content ol {
  margin: 0;
  padding-left: 1.2rem;
}
details.howto .howto__content ol li {
  margin-bottom: 0.6rem;
}
/* Logo + text pairing */
.logo-text-block {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-block: 1.5rem;
}

.logo-text-block picture {
  display: block;
  flex-shrink: 0;
}

.logo-text-block img.inline-logo {
  width: 140px;
  height: auto;
  display: block;
}

.logo-text-block p,
.logo-text-block h2 {
  margin: 0;
}

.logo-text-block div {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.workflow-image {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}