:root {
  /* Primary — Bitcoin amber, used sparingly for emphasis and CTAs */
  --color-primary: #F7931A;
  --color-primary-light: #FFB347;
  --color-primary-dark: #CC7A15;

  /* Neutrals — The dominant palette. Dark, warm, grounded. */
  --color-bg-primary: #0D0D0D;
  --color-bg-secondary: #1A1A1A;
  --color-bg-elevated: #242424;
  --color-bg-surface: #2E2E2E;

  /* Text */
  --color-text-primary: #E8E4DF;
  --color-text-secondary: #9B9590;
  --color-text-muted: #6B6560;

  /* Accent — Clay/terracotta from the golem itself */
  --color-clay: #A0785A;
  --color-clay-light: #C4A882;
  --color-clay-dark: #7A5C42;

  /* Semantic */
  --color-success: #4CAF50;
  --color-warning: #F7931A;
  --color-danger: #D32F2F;
  --color-info: #5C8A9B;

  /* Borders and dividers */
  --color-border: #333333;
  --color-border-subtle: #2A2A2A;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'DM Sans', 'IBM Plex Sans', sans-serif;
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  min-height: 100dvh;
  overflow-x: hidden;
}

#app {
  max-width: 420px;
  margin: 0 auto;
  padding: 0 16px;
  padding-bottom: env(safe-area-inset-bottom, 16px);
}

/* --- Header --- */

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  padding-top: max(16px, env(safe-area-inset-top));
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-logo {
  font-size: 24px;
  color: var(--color-primary);
  line-height: 1;
}

.header-wordmark {
  font-family: 'Cabinet Grotesk', 'DM Sans', sans-serif;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 0.05em;
  color: var(--color-text-primary);
}

.agent-status {
  display: flex;
  align-items: center;
  gap: 6px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-text-muted);
  flex-shrink: 0;
}

.status-dot-sm {
  width: 6px;
  height: 6px;
}

.status-dot.online {
  background-color: var(--color-success);
  animation: pulse 2s ease-in-out infinite;
}

.status-dot.refreshing {
  background-color: var(--color-warning);
}

.status-dot.error {
  background-color: var(--color-danger);
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.status-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-secondary);
}

/* --- Balance Hero --- */

.balance-hero {
  text-align: center;
  padding: 32px 0 24px;
}

.balance-btc {
  font-family: 'JetBrains Mono', 'IBM Plex Mono', monospace;
  font-size: 36px;
  font-weight: 500;
  color: var(--color-text-primary);
  letter-spacing: -0.01em;
}

.balance-label {
  font-family: 'DM Sans', sans-serif;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

.balance-sats {
  font-family: 'JetBrains Mono', 'IBM Plex Mono', monospace;
  font-size: 14px;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* --- Action Buttons --- */

.action-buttons {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
}

.btn {
  flex: 1;
  padding: 14px 20px;
  border-radius: 10px;
  font-family: 'DM Sans', sans-serif;
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: opacity 0.15s;
}

.btn:active {
  opacity: 0.8;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-bg-primary);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn-full {
  width: 100%;
  flex: none;
}

/* --- Boarding Banner --- */

.boarding-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-primary-dark);
  border-radius: 10px;
  padding: 12px 16px;
  margin-bottom: 12px;
}

.boarding-banner-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.boarding-banner-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
}

.boarding-banner-detail {
  font-size: 12px;
  color: var(--color-text-secondary);
}

.btn-sm {
  flex: none;
  padding: 8px 16px;
  font-size: 13px;
}

/* --- Agent Card --- */

.agent-card {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: 10px;
  padding: 14px 16px;
  margin-bottom: 24px;
}

.agent-card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.agent-card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.agent-card-detail {
  font-size: 13px;
  color: var(--color-text-secondary);
}

/* --- Transactions --- */

.tx-section {
  margin-bottom: 24px;
}

.tx-section-title {
  font-family: 'Cabinet Grotesk', 'DM Sans', sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.tx-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.tx-empty {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 14px;
  padding: 32px 0;
}

.tx-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background-color: var(--color-bg-secondary);
  border-radius: 8px;
}

.tx-item-left {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.tx-type {
  font-size: 14px;
  font-weight: 500;
}

.tx-type.sent { color: var(--color-text-primary); }
.tx-type.received { color: var(--color-success); }

.tx-date {
  font-size: 12px;
  color: var(--color-text-muted);
}

.tx-item-right {
  text-align: right;
  flex-shrink: 0;
}

.tx-amount {
  font-family: 'JetBrains Mono', 'IBM Plex Mono', monospace;
  font-size: 14px;
  font-weight: 500;
}

.tx-amount.sent { color: var(--color-text-primary); }
.tx-amount.received { color: var(--color-success); }

.tx-settled {
  font-size: 11px;
  color: var(--color-text-muted);
}

/* --- Modals --- */

.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  align-items: flex-end;
  justify-content: center;
}

.modal.active {
  display: flex;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
}

.modal-content {
  position: relative;
  width: 100%;
  max-width: 420px;
  max-height: 90dvh;
  overflow-y: auto;
  background-color: var(--color-bg-secondary);
  border-radius: 16px 16px 0 0;
  padding: 24px 20px;
  padding-bottom: max(24px, env(safe-area-inset-bottom));
  animation: slideUp 0.2s ease-out;
}

@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.modal-title {
  font-family: 'Cabinet Grotesk', 'DM Sans', sans-serif;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.modal-close {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: 24px;
  cursor: pointer;
  padding: 4px 8px;
  line-height: 1;
}

/* --- Forms --- */

.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
}

.form-input {
  width: 100%;
  padding: 12px 14px;
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text-primary);
  font-family: 'DM Sans', sans-serif;
  font-size: 15px;
  outline: none;
  transition: border-color 0.15s;
}

.form-input:focus {
  border-color: var(--color-primary);
}

.form-input.mono {
  font-family: 'JetBrains Mono', 'IBM Plex Mono', monospace;
}

.form-hint {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.oor-limit {
  font-size: 13px;
  color: var(--color-text-secondary);
}

.send-error {
  color: var(--color-danger);
  font-size: 13px;
  margin-bottom: 12px;
  min-height: 0;
}

.send-success {
  color: var(--color-success);
  font-size: 13px;
  margin-top: 12px;
  word-break: break-all;
}

/* --- Receive --- */

.receive-section {
  margin-bottom: 20px;
}

.address-display {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 10px 12px;
  margin-top: 6px;
}

.address-text {
  flex: 1;
  font-size: 13px;
  color: var(--color-text-primary);
  word-break: break-all;
  line-height: 1.4;
}

.btn-copy {
  flex-shrink: 0;
  padding: 6px 12px;
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  color: var(--color-text-secondary);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  font-family: 'DM Sans', sans-serif;
}

.btn-copy:active {
  opacity: 0.7;
}

/* --- Mono utility --- */

.mono {
  font-family: 'JetBrains Mono', 'IBM Plex Mono', monospace;
}