:root {
  --bg-color: #0b0f19;
  --card-bg: rgba(20, 28, 47, 0.45);
  --card-border: rgba(255, 255, 255, 0.08);
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --primary: #10b981;
  --primary-hover: #34d399;
  --accent-cyan: #06b6d4;
  --accent-purple: #8b5cf6;
  --accent-orange: #f59e0b;
  --accent-red: #ef4444;
  --code-bg: #111827;
  --code-border: rgba(255, 255, 255, 0.05);
  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'Fira Code', monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background-color: var(--bg-color);
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(16, 185, 129, 0.06) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(6, 182, 212, 0.06) 0%, transparent 40%);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  padding: 2rem 1rem;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
}

header {
  text-align: center;
  margin-bottom: 3rem;
  padding: 1.5rem 0;
  position: relative;
}

.badge {
  display: inline-block;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(6, 182, 212, 0.15));
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--primary-hover);
  padding: 0.3rem 1rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

h1 {
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #ffffff 30%, #a7f3d0 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
}

.subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto;
  font-weight: 300;
}

/* Navigation Row */
.nav-row {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.nav-row a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
}

.nav-row a:hover, .nav-row a.active {
  color: var(--primary-hover);
  background: rgba(255, 255, 255, 0.03);
}

/* Cards Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 2rem;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(16, 185, 129, 0.25);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

.card h2 {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  font-weight: 300;
}

.card-footer {
  margin-top: auto;
}

/* Forms & Inputs */
.form-group {
  margin-bottom: 1rem;
}

label {
  display: block;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.input-wrapper {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

input[type="text"], input[type="number"] {
  flex: 1;
  min-width: 140px;
  background: rgba(17, 24, 39, 0.8);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  color: #ffffff;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

input[type="text"]:focus, input[type="number"]:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
}

input:disabled {
  background: rgba(17, 24, 39, 0.4);
  color: rgba(255, 255, 255, 0.3);
  cursor: not-allowed;
  border-color: rgba(255, 255, 255, 0.04);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #0b0f19;
  font-weight: 600;
  padding: 0.75rem 1.25rem;
  border-radius: 8px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: background-color 0.2s, transform 0.1s;
}

.btn:hover:not(:disabled) {
  background-color: var(--primary-hover);
}

.btn:active:not(:disabled) {
  transform: scale(0.98);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: #ffffff;
  border: 1px solid var(--card-border);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

.btn-disabled, .btn:disabled {
  background: rgba(255, 255, 255, 0.02);
  color: rgba(255, 255, 255, 0.2);
  cursor: not-allowed;
  border: 1px solid rgba(255, 255, 255, 0.03);
}

.btn-disabled:hover { background: rgba(255, 255, 255, 0.02); }

/* Alert Boxes & Alerts */
.safety-alert, .notice-box {
  background: rgba(239, 68, 68, 0.07);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  font-size: 0.85rem;
  color: #fca5a5;
  margin-bottom: 1rem;
}

.notice-box {
  background: rgba(245, 158, 11, 0.07);
  border-color: rgba(245, 158, 11, 0.25);
  color: #fde68a;
  border-left: 4px solid var(--accent-orange);
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
  font-size: 0.95rem;
}

th, td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--card-border);
  vertical-align: top;
}

th {
  color: #ffffff;
  font-weight: 500;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  width: 14rem;
}

td code {
  background: var(--code-bg);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  word-break: break-all;
  border: 1px solid var(--code-border);
}

/* Sections */
section {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 2.5rem;
  margin-bottom: 2.5rem;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

section h2 {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: #ffffff;
  background: linear-gradient(135deg, #ffffff, var(--text-muted));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.safety-item {
  padding-left: 1.5rem;
  position: relative;
}

.safety-item::before {
  content: "🛡️";
  position: absolute;
  left: 0;
  top: 0;
  font-size: 1rem;
}

.safety-item h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: #ffffff;
}

.safety-item p {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 300;
}

/* Helper Text Wording Classes */
.muted {
  color: var(--text-muted);
}

.ok {
  color: var(--primary-hover);
}

.warn {
  color: var(--accent-orange);
}

.bad {
  color: var(--accent-red);
}

.tx-link {
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  text-decoration: none;
  word-break: break-all;
  transition: color 0.2s;
}

.tx-link:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

/* API Documentation Accordions */
.endpoint {
  border: 1px solid var(--card-border);
  background: rgba(17, 24, 39, 0.3);
  border-radius: 10px;
  margin-bottom: 1rem;
  overflow: hidden;
}

.endpoint-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  cursor: pointer;
  user-select: none;
  background: rgba(255, 255, 255, 0.02);
  transition: background 0.2s;
}

.endpoint-trigger:hover {
  background: rgba(255, 255, 255, 0.04);
}

.method {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  margin-right: 0.75rem;
  background: #3b82f6;
  color: #ffffff;
}

.method-get { 
  background: rgba(16, 185, 129, 0.15); 
  color: var(--primary-hover); 
  border: 1px solid rgba(16, 185, 129, 0.2); 
}

.path {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 500;
  color: #ffffff;
  flex: 1;
}

.desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-left: 1rem;
}

.endpoint-content {
  padding: 1.5rem;
  border-top: 1px solid var(--card-border);
  display: none;
}

.endpoint-content.active {
  display: block;
}

.doc-group {
  margin-bottom: 1.25rem;
}

.doc-group h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  padding: 1rem;
  border-radius: 8px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #a7f3d0;
  margin-bottom: 0.5rem;
}

.field-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.field-table th, .field-table td {
  padding: 0.6rem 0.8rem;
  text-align: left;
  border-bottom: 1px solid var(--card-border);
}

.field-name {
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  font-weight: 500;
}

.field-type {
  font-family: var(--font-mono);
  color: var(--accent-purple);
  font-size: 0.8rem;
}

/* Badge styles for payment states */
.payment-badge {
  display: inline-block;
  border: 1px solid #ccc;
  border-radius: 999px;
  padding: 0.2rem 0.65rem;
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: lowercase;
}

.status-waiting { border-color: #4b5563; background: rgba(75, 85, 99, 0.15); color: #9ca3af; }
.status-seen-in-mempool, .status-paid-unconfirmed, .status-partial { border-color: rgba(245, 158, 11, 0.3); background: rgba(245, 158, 11, 0.08); color: var(--accent-orange); }
.status-paid-confirmed, .status-overpaid { border-color: rgba(16, 185, 129, 0.3); background: rgba(16, 185, 129, 0.08); color: var(--primary-hover); }
.status-expired, .status-error { border-color: rgba(239, 68, 68, 0.3); background: rgba(239, 68, 68, 0.08); color: var(--accent-red); }

/* QR box */
.qr-box {
  margin-top: 1rem;
}

.qr-box img {
  width: 180px;
  height: 180px;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 0.5rem;
  background: #ffffff;
}

/* Actions Row flex */
.actions-row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: flex-end;
}

.field-block {
  min-width: min(100%, 12rem);
}

.field-block.wide {
  flex: 1 1 24rem;
}

.field-block.narrow {
  flex: 0 1 10rem;
}

.copy-row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
  margin: 0.75rem 0;
}

.copy-row code {
  flex: 1 1 18rem;
}

/* Footer & External Links */
footer {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 4rem;
  padding: 2.5rem 0;
  border-top: 1px solid var(--card-border);
}

.links-row {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.links-row a {
  color: var(--primary-hover);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.links-row a:hover {
  color: #ffffff;
  text-decoration: underline;
}

@media (max-width: 768px) {
  h1 { font-size: 2.25rem; }
  body { padding: 1rem 0.5rem; }
  section { padding: 1.5rem; }
  .desc { display: none; }
  .actions-row { flex-direction: column; align-items: stretch; }
  th { width: auto; display: block; padding-bottom: 0.15rem; }
  td { display: block; padding-top: 0.15rem; }
}

/* Live Status Summary Bar */
.status-summary-bar {
  display: flex;
  justify-content: space-around;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 1rem;
  margin-bottom: 2.5rem;
  gap: 1rem;
  flex-wrap: wrap;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.status-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
}

.status-item span {
  font-weight: 500;
  color: var(--text-muted);
}

.status-pill {
  padding: 0.2rem 0.6rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.status-online {
  background: rgba(16, 185, 129, 0.12);
  color: var(--primary-hover);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.status-offline {
  background: rgba(239, 68, 68, 0.12);
  color: var(--accent-red);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.status-value {
  color: #ffffff;
}

.status-value code {
  background: var(--code-bg);
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  border: 1px solid var(--code-border);
}

/* Brand Logo Layout */
.brand-logo {
  height: 64px;
  max-width: 100%;
  width: auto;
  margin-bottom: 1rem;
  display: inline-block;
  vertical-align: middle;
}