:root {
  --bg-layer: radial-gradient(120% 120% at 10% 20%, rgba(34, 211, 238, 0.12), transparent 40%),
    radial-gradient(90% 90% at 85% 10%, rgba(245, 158, 11, 0.16), transparent 35%),
    #0f172a;
  --card: #111827;
  --panel-bg: linear-gradient(145deg, rgba(34, 211, 238, 0.1), rgba(17, 24, 39, 0.9));
  --panel-border: rgba(34, 211, 238, 0.25);
  --border: #1f2937;
  --border-hover: rgba(255, 255, 255, 0.12);
  --accent: #22d3ee;
  --accent-2: #f59e0b;
  --text: #e5e7eb;
  --text-strong: #0b172b;
  --muted: #94a3b8;
  --ghost: rgba(255, 255, 255, 0.04);
  --input-bg: rgba(255, 255, 255, 0.02);
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  --font-sans: "Space Grotesk", "Segoe UI", "Helvetica Neue", "Noto Sans", sans-serif;
  --font-mono: "JetBrains Mono", "Menlo", "SFMono-Regular", "Consolas", monospace;
  --radius: 14px;
}

:root[data-theme="light"] {
  --bg-layer: radial-gradient(120% 120% at 10% 20%, rgba(14, 165, 233, 0.08), transparent 45%),
    radial-gradient(90% 90% at 85% 10%, rgba(245, 158, 11, 0.12), transparent 40%),
    #f8fafc;
  --card: #ffffff;
  --panel-bg: linear-gradient(145deg, rgba(34, 211, 238, 0.12), rgba(255, 255, 255, 0.95));
  --panel-border: rgba(34, 211, 238, 0.25);
  --border: #e2e8f0;
  --border-hover: rgba(15, 23, 42, 0.16);
  --text: #0f172a;
  --text-strong: #0f172a;
  --muted: #475569;
  --ghost: rgba(15, 23, 42, 0.04);
  --input-bg: #f8fafc;
  --shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg-layer);
  color: var(--text);
  min-height: 100vh;
  transition: background 0.3s ease, color 0.3s ease;
}

.page {
  max-width: 1180px;
  margin: 0 auto;
  padding: 32px 20px 80px;
}

.hero {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 20px;
  align-items: stretch;
  margin-bottom: 24px;
}

.hero__intro h1 {
  margin: 8px 0 12px;
  font-size: 32px;
  letter-spacing: -0.02em;
}

.hero__intro .lede {
  color: var(--muted);
  line-height: 1.5;
}

.hero__actions {
  margin: 16px 0 6px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.hero__panel {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}

.hero__panel__inner {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  padding: 14px 16px;
  transition: background 0.3s ease, border 0.3s ease;
}

:root[data-theme="light"] .hero__panel__inner {
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(15, 23, 42, 0.06);
}

.hero__panel ul {
  margin: 8px 0 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.5;
}

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

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}

.span-2 {
  grid-column: span 2;
}

.card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
}

.card__header h2 {
  margin: 4px 0 6px;
}

.card__footer {
  margin-top: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 11px;
  color: var(--accent);
  margin: 0;
}

.subtle {
  color: var(--muted);
  margin: 0;
}

.hint {
  color: var(--muted);
  font-size: 13px;
}

.btn {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  padding: 10px 14px;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.15s ease;
  font-weight: 600;
}

.btn:hover {
  transform: translateY(-1px);
  border-color: var(--border-hover);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #0ea5e9);
  border: none;
  color: var(--text-strong);
}

.btn-primary:hover {
  box-shadow: 0 12px 30px rgba(14, 165, 233, 0.35);
}

.btn-ghost {
  background: var(--ghost);
}

.raw-input,
.yaml-output {
  width: 100%;
  margin-top: 12px;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5;
  resize: vertical;
}

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

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
}

input,
select {
  background: var(--input-bg);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 10px;
  font-size: 14px;
  font-family: var(--font-sans);
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  background: rgba(34, 211, 238, 0.14);
  border: 1px solid rgba(34, 211, 238, 0.3);
  color: #67e8f9;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.panel-label {
  margin: 0;
  color: var(--muted);
  font-weight: 600;
}

.tiny {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.relay-list {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.relay-item {
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  transition: border-color 0.15s ease;
}

.relay-item:hover {
  border-color: var(--border-hover);
}

.relay-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.relay-header > div {
  flex: 1;
  min-width: 0;
}

.relay-header strong {
  color: var(--text);
  font-size: 14px;
  display: block;
  margin-bottom: 4px;
}

.relay-meta {
  color: var(--muted);
  font-size: 12px;
  font-family: var(--font-mono);
  display: block;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
  }
  .grid {
    grid-template-columns: 1fr;
  }
  .span-2 {
    grid-column: span 1;
  }
  .card__footer {
    flex-direction: column;
    align-items: flex-start;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
}

/* Modal Dialog Styles */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 1;
  transition: opacity 0.2s ease;
}

.modal-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.modal-dialog {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  max-width: 420px;
  width: 90%;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  text-align: center;
  transform: scale(1);
  transition: transform 0.2s ease;
}

.modal-overlay.hidden .modal-dialog {
  transform: scale(0.95);
}

.modal-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(245, 158, 11, 0.1));
  border-radius: 50%;
  margin-bottom: 16px;
  color: var(--accent-2);
}

.modal-title {
  margin: 0 0 12px;
  font-size: 1.25rem;
  color: var(--text);
}

.modal-message {
  margin: 0 0 24px;
  color: var(--muted);
  line-height: 1.6;
  font-size: 0.95rem;
}

.modal-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.modal-actions .btn {
  min-width: 100px;
  padding: 12px 20px;
}

.modal-actions .btn-primary {
  background: linear-gradient(135deg, var(--accent-2), #d97706);
}

.modal-actions .btn-primary:hover {
  box-shadow: 0 12px 30px rgba(245, 158, 11, 0.35);
}