:root {
  --bg: #0b0f14;
  --card: #11161c;
  --border: #1f2933;
  --text-primary: #e6edf3;
  --text-secondary: #9aa4af;
  --success: #22c55e;
  --cta: #3b82f6;
  --cta-hover: #2563eb;
  --warning: #f59e0b;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  --radius: 12px;
  --space-1: 8px;
  --space-2: 12px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, SFMono-Regular, Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top, rgba(59, 130, 246, 0.14), transparent 30%),
    radial-gradient(circle at bottom, rgba(34, 197, 94, 0.08), transparent 28%),
    var(--bg);
  color: var(--text-primary);
  font-family: var(--font-sans);
}

body,
button,
input,
textarea,
a {
  font: inherit;
}

a {
  color: var(--text-primary);
}

button {
  appearance: none;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(11, 15, 20, 0.88);
  color: var(--text-primary);
  padding: 14px 16px;
  outline: none;
  transition: border-color 120ms ease, box-shadow 120ms ease;
}

input::placeholder,
textarea::placeholder {
  color: rgba(154, 164, 175, 0.78);
}

input:focus,
textarea:focus {
  border-color: rgba(59, 130, 246, 0.85);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.18);
}

.hidden {
  display: none !important;
}

.app-root,
.invoice-page {
  min-height: 100vh;
}

.screen-center {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.landing-shell {
  width: 100%;
  max-width: 720px;
  display: grid;
  gap: var(--space-4);
  justify-items: center;
  text-align: center;
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  font-weight: 600;
  letter-spacing: 0.01em;
}

.brand-lockup-large {
  font-size: 1.05rem;
}

.brand-lockup-center {
  justify-content: center;
}

.brand-mark {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--cta), var(--success));
  box-shadow: 0 0 24px rgba(59, 130, 246, 0.38);
}

.landing-title {
  margin: 0;
  max-width: 12ch;
  font-size: clamp(2.5rem, 5vw, 3rem);
  line-height: 1;
  letter-spacing: -0.04em;
  font-weight: 700;
}

.landing-copy,
.dashboard-subtitle,
.section-caption,
.status-text,
.invoice-row-subtext,
.guardrail-inline,
.invoice-currency {
  color: var(--text-secondary);
}

.landing-copy {
  margin: 0;
  font-size: 1rem;
}

.landing-actions,
.dashboard-header-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  justify-content: center;
}

.button,
.text-button,
.icon-button,
.row-link,
.explorer-link {
  transition: background 120ms ease, border-color 120ms ease, color 120ms ease, transform 120ms ease, opacity 120ms ease;
}

.button {
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 16px;
  text-decoration: none;
  white-space: nowrap;
}

.button:hover,
.text-button:hover,
.row-link:hover,
.explorer-link:hover,
.icon-button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--cta);
  color: white;
}

.button-primary:hover {
  background: var(--cta-hover);
}

.button-secondary {
  background: transparent;
  border-color: var(--border);
  color: var(--text-primary);
}

.button-secondary:hover {
  border-color: rgba(154, 164, 175, 0.42);
  background: rgba(255, 255, 255, 0.03);
}

.button-block {
  width: 100%;
}

.button-large {
  min-height: 48px;
}

.button-small {
  min-height: 38px;
  padding: 0 14px;
}

.text-button {
  background: none;
  border: 0;
  color: var(--cta);
  cursor: pointer;
  padding: 0;
}

.text-button:hover {
  color: #60a5fa;
}

.card {
  background: rgba(17, 22, 28, 0.94);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.auth-card {
  width: 100%;
  max-width: 380px;
  padding: var(--space-5);
  display: grid;
  gap: var(--space-4);
}

.form-stack {
  display: grid;
  gap: var(--space-3);
}

.field {
  display: grid;
  gap: var(--space-1);
}

.field span {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.field-large input {
  min-height: 56px;
  font-size: 1.2rem;
}

.auth-switch {
  margin: 0;
  color: var(--text-secondary);
  text-align: center;
}

.auth-back {
  justify-self: center;
}

.app-body .status-text {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.5;
}

.status-text-center {
  text-align: center;
}

.dashboard-shell {
  width: 100%;
  max-width: 980px;
  margin: 0 auto;
  padding: 24px;
  display: grid;
  gap: var(--space-4);
}

.dashboard-header {
  padding: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.dashboard-subtitle {
  margin: 8px 0 0;
}

.summary-card,
.list-card {
  padding: var(--space-4);
}

.section-label {
  display: inline-block;
  color: var(--text-secondary);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.summary-value {
  display: block;
  margin-top: 10px;
  font-size: clamp(2rem, 4vw, 2.75rem);
  line-height: 1;
}

.section-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.section-row h2,
.modal-header h2 {
  margin: 6px 0 0;
  font-size: 1.35rem;
}

.section-caption {
  margin: 10px 0 0;
}

.guardrail-inline {
  margin-top: var(--space-3);
  padding: 12px 14px;
  border: 1px solid rgba(154, 164, 175, 0.15);
  border-radius: var(--radius);
  background: rgba(11, 15, 20, 0.55);
  font-size: 0.92rem;
  line-height: 1.5;
}

.invoice-list {
  display: grid;
  gap: 12px;
  margin-top: var(--space-3);
}

.invoice-row {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) auto auto;
  gap: var(--space-3);
  align-items: center;
  padding: 16px;
  border: 1px solid rgba(154, 164, 175, 0.12);
  border-radius: var(--radius);
  background: rgba(11, 15, 20, 0.55);
}

.invoice-row-main {
  display: grid;
  gap: 6px;
}

.invoice-row-amount {
  font-size: 1.1rem;
}

.invoice-row-description {
  color: var(--text-primary);
  font-size: 0.96rem;
}

.invoice-row-status {
  display: flex;
  justify-content: center;
}

.invoice-row-side {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  justify-self: end;
}

.invoice-row-date {
  color: var(--text-secondary);
  font-size: 0.94rem;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 84px;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  font-size: 0.84rem;
  font-weight: 600;
}

.status-badge.pending {
  background: rgba(154, 164, 175, 0.12);
  border: 1px solid rgba(154, 164, 175, 0.16);
  color: var(--text-secondary);
}

.status-badge.paid {
  background: rgba(34, 197, 94, 0.12);
  border: 1px solid rgba(34, 197, 94, 0.22);
  color: #86efac;
}

.row-link,
.explorer-link,
.inline-link {
  color: #93c5fd;
  text-decoration: none;
}

.row-link:hover,
.explorer-link:hover,
.inline-link:hover {
  color: #bfdbfe;
}

.empty-state {
  padding: 28px;
  border: 1px dashed rgba(154, 164, 175, 0.2);
  border-radius: var(--radius);
  color: var(--text-secondary);
  text-align: center;
}

.empty-state-title {
  display: block;
  color: var(--text-primary);
  font-size: 1.05rem;
}

.empty-state-copy {
  margin: 8px 0 0;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(0, 0, 0, 0.68);
  backdrop-filter: blur(8px);
  z-index: 20;
}

.modal-card {
  width: 100%;
  max-width: 480px;
  padding: var(--space-4);
  display: grid;
  gap: var(--space-4);
}

.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
}

.modal-header p {
  margin: 0;
}

.icon-button {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(11, 15, 20, 0.72);
  color: var(--text-primary);
  cursor: pointer;
}

.invoice-summary {
  display: grid;
  gap: 12px;
  padding: 16px;
  border: 1px solid rgba(154, 164, 175, 0.14);
  border-radius: var(--radius);
  background: rgba(11, 15, 20, 0.55);
}

.summary-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  color: var(--text-secondary);
}

.summary-row strong {
  color: var(--text-primary);
}

.summary-row-total {
  padding-top: 12px;
  border-top: 1px solid rgba(154, 164, 175, 0.12);
  color: var(--text-primary);
}

.money {
  font-variant-numeric: tabular-nums lining-nums;
  letter-spacing: 0.02em;
  color: var(--text-primary);
}

.invoice-page {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.invoice-card {
  width: 100%;
  max-width: 480px;
  padding: var(--space-5);
  display: grid;
  gap: var(--space-4);
  text-align: center;
}

.invoice-card-paid {
  border-color: rgba(34, 197, 94, 0.3);
  box-shadow: 0 24px 80px rgba(34, 197, 94, 0.14);
}

.invoice-hero {
  display: grid;
  gap: 6px;
}

.invoice-total {
  font-size: clamp(3rem, 8vw, 3.75rem);
  line-height: 1;
  letter-spacing: -0.03em;
}

.invoice-currency {
  font-size: 0.95rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.invoice-description {
  margin: 4px 0 0;
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.5;
}

.invoice-breakdown {
  display: grid;
  gap: 10px;
  padding: 16px;
  border-radius: var(--radius);
  background: rgba(11, 15, 20, 0.6);
  border: 1px solid rgba(154, 164, 175, 0.12);
}

.invoice-lead {
  margin: 0;
  font-size: 1rem;
  color: var(--text-primary);
}

.invoice-actions-panel {
  display: grid;
  gap: var(--space-3);
}

.invoice-wallet-hint {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.invoice-divider {
  position: relative;
  display: flex;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 0.88rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.invoice-divider::before {
  content: "";
  position: absolute;
  inset: 50% 0 auto;
  border-top: 1px solid rgba(154, 164, 175, 0.12);
}

.invoice-divider span {
  position: relative;
  padding: 0 12px;
  background: var(--card);
}

.qr-shell {
  width: min(100%, 240px);
  margin: 0 auto;
  padding: 16px;
  border-radius: 16px;
  background: #f8fafc;
}

.qr-shell img {
  display: block;
  width: 100%;
  height: auto;
}

.address-panel {
  display: grid;
  gap: var(--space-1);
}

.address-code {
  display: inline-block;
  padding: 14px 16px;
  border-radius: var(--radius);
  border: 1px solid rgba(154, 164, 175, 0.14);
  background: rgba(11, 15, 20, 0.55);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 1rem;
}

.status-panel {
  display: grid;
  gap: var(--space-2);
  padding: 16px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  text-align: left;
}

.status-panel-top {
  display: flex;
  align-items: center;
  gap: 10px;
}

.status-panel-waiting {
  background: rgba(154, 164, 175, 0.08);
  border-color: rgba(154, 164, 175, 0.12);
}

.status-panel-confirming,
.status-panel-detected {
  background: rgba(59, 130, 246, 0.1);
  border-color: rgba(59, 130, 246, 0.2);
}

.status-panel-paid {
  background: rgba(34, 197, 94, 0.1);
  border-color: rgba(34, 197, 94, 0.22);
}

.status-spinner {
  width: 16px;
  height: 16px;
  border-radius: 999px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  animation: spin 900ms linear infinite;
  color: var(--text-secondary);
}

.explorer-link {
  justify-self: center;
}

.guardrail-inline-pay {
  margin-top: 0;
  text-align: left;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 920px) {
  .dashboard-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .dashboard-header-actions {
    width: 100%;
    justify-content: flex-start;
  }

  .invoice-row {
    grid-template-columns: 1fr;
    justify-items: start;
  }

  .invoice-row-status,
  .invoice-row-side {
    justify-self: start;
  }
}

@media (max-width: 640px) {
  .screen-center,
  .dashboard-shell,
  .invoice-page,
  .modal-backdrop {
    padding: 16px;
  }

  .landing-actions,
  .dashboard-header-actions {
    width: 100%;
    flex-direction: column;
  }

  .landing-actions .button,
  .dashboard-header-actions .button {
    width: 100%;
  }

  .auth-card,
  .invoice-card,
  .modal-card,
  .summary-card,
  .list-card,
  .dashboard-header {
    padding: 20px;
  }
}