:root {
  color-scheme: light;
  --color-white: 255 255 255;
  --color-gray-0: 250 249 248;
  --color-gray-50: 249 247 246;
  --color-gray-100: 247 245 244;
  --color-gray-200: 238 235 234;
  --color-gray-300: 218 214 213;
  --color-gray-400: 175 172 171;
  --color-gray-500: 112 110 109;
  --color-gray-600: 68 67 66;
  --color-gray-700: 46 45 45;
  --color-gray-800: 35 34 34;
  --color-gray-900: 31 30 30;
  --color-blue-0: 240 245 255;
  --color-blue-50: 206 222 253;
  --color-blue-100: 173 199 252;
  --color-blue-200: 133 170 245;
  --color-blue-500: 75 112 204;
  --color-blue-600: 63 93 179;
  --color-green-0: 239 255 237;
  --color-green-300: 30 166 114;
  --color-green-500: 14 98 69;
  --color-red-0: 255 246 244;
  --color-red-500: 178 45 48;
  --color-red-600: 148 8 33;
  --bg-app: rgb(var(--color-gray-100));
  --bg-base: rgb(var(--color-white));
  --bg-subtle: rgb(var(--color-gray-50));
  --text-base: rgb(var(--color-gray-800));
  --text-muted: rgb(var(--color-gray-500));
  --text-disabled: rgb(var(--color-gray-400));
  --text-primary: rgb(var(--color-blue-600));
  --border-base: rgb(var(--color-gray-200));
  --border-interactive: rgb(var(--color-gray-300));
  --border-hover: rgb(var(--color-gray-400));
  --focus: rgb(var(--color-blue-100));
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-popover: 0 0 0 1px rgb(0 0 0 / 0.03), 0 15px 35px 0 rgb(0 0 0 / 0.1), 0 5px 15px 0 rgb(0 0 0 / 0.08);
}

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

html {
  background: var(--bg-app);
  min-height: 100%;
}

body {
  background: var(--bg-app);
  color: var(--text-base);
  font-family: Inter, -apple-system, BlinkMacSystemFont, Helvetica, Arial, sans-serif;
  font-size: 14px;
  letter-spacing: -0.015em;
  line-height: 1.4286;
  margin: 0;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button,
input,
textarea {
  color: inherit;
  font: inherit;
  letter-spacing: inherit;
}

button,
.button-link {
  align-items: center;
  background: rgb(var(--color-gray-900));
  border: 1px solid rgb(var(--color-gray-900));
  border-radius: 6px;
  box-shadow: var(--shadow-sm);
  color: #fff;
  cursor: pointer;
  display: inline-flex;
  font-weight: 600;
  justify-content: center;
  min-height: 34px;
  padding: 7px 12px;
  text-decoration: none;
  transition: background-color 120ms ease, border-color 120ms ease, box-shadow 120ms ease;
}

button:hover,
.button-link:hover {
  background: rgb(var(--color-gray-700));
  border-color: rgb(var(--color-gray-700));
}

button:focus-visible,
.button-link:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

input,
textarea {
  background: var(--bg-base);
  border: 1px solid var(--border-interactive);
  border-radius: 6px;
  box-shadow: inset 0 1px 1px rgb(0 0 0 / 0.02);
  padding: 8px 10px;
  width: 100%;
}

input::placeholder,
textarea::placeholder {
  color: var(--text-disabled);
  opacity: 1;
}

textarea {
  min-height: 116px;
  resize: vertical;
}

.hidden {
  display: none !important;
}

.shell {
  margin: 0 auto;
  padding: 24px;
  width: min(1280px, 100%);
}

.login-panel,
.panel,
.tab {
  background: var(--bg-base);
  border: 1px solid var(--border-base);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  padding: 20px;
}

.login-panel {
  margin: 80px auto;
  max-width: 400px;
}

.login-panel h1 {
  font-size: 24px;
  font-weight: 650;
  margin-bottom: 20px;
}

.login-panel form {
  display: grid;
  gap: 14px;
}

.login-panel label,
.response-grid label {
  color: var(--text-muted);
  display: grid;
  font-size: 12px;
  font-weight: 600;
  gap: 6px;
}

#loginError {
  color: rgb(var(--color-red-600));
  margin: 0;
}

.topbar {
  align-items: center;
  background: var(--bg-base);
  border: 1px solid var(--border-base);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  color: var(--text-base);
  display: flex;
  justify-content: space-between;
  margin-bottom: 16px;
  padding: 18px 20px;
}

.topbar-actions {
  align-items: center;
  display: flex;
  gap: 10px;
}

.wallet-chip {
  align-items: center;
  background: rgb(var(--color-gray-50));
  border: 1px solid var(--border-base);
  border-radius: 9999px;
  display: flex;
  gap: 8px;
  min-height: 34px;
  padding: 6px 12px;
}

.wallet-chip span {
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 650;
  text-transform: uppercase;
}

.wallet-chip strong {
  color: rgb(var(--color-gray-900));
  font-weight: 650;
}

.eyebrow {
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 650;
  margin: 0 0 4px;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
}

h1 {
  font-size: 22px;
  font-weight: 650;
  line-height: 1.2;
}

h2 {
  font-size: 16px;
  font-weight: 650;
}

p {
  color: var(--text-muted);
}

.tabs {
  background: var(--bg-base);
  border: 1px solid var(--border-base);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 16px;
  padding: 4px;
}

.tabs button {
  align-items: center;
  background: transparent;
  border-color: transparent;
  box-shadow: none;
  color: var(--text-muted);
  min-height: 32px;
  gap: 7px;
}

.tab-icon {
  align-items: center;
  display: inline-flex;
  font-size: 14px;
  justify-content: center;
  line-height: 1;
  width: 16px;
}

.tabs button:hover {
  background: rgb(var(--color-gray-100));
  border-color: transparent;
  color: var(--text-base);
}

.tabs button.active {
  background: rgb(var(--color-gray-900));
  border-color: rgb(var(--color-gray-900));
  color: #fff;
}

.tab {
  display: none;
}

.tab.active {
  display: block;
}

.cards {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(4, 1fr);
  margin-bottom: 16px;
}

.cards article {
  background: var(--bg-base);
  border: 1px solid var(--border-base);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  padding: 16px;
}

.cards span {
  color: var(--text-muted);
  display: block;
  font-size: 11px;
  font-weight: 650;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.cards strong {
  color: rgb(var(--color-gray-900));
  font-size: 24px;
  font-weight: 650;
}

.panel + .panel {
  margin-top: 16px;
}

.panel-heading {
  align-items: center;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.table-wrap {
  border: 1px solid var(--border-base);
  border-radius: 8px;
  overflow: auto;
}

table {
  border-collapse: collapse;
  min-width: 980px;
  width: 100%;
}

th,
td {
  border-bottom: 1px solid var(--border-base);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

tr:last-child td {
  border-bottom: 0;
}

th {
  background: rgb(var(--color-gray-50));
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 650;
  text-transform: uppercase;
}

td {
  color: var(--text-base);
}

.response-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr 1fr;
}

.response-grid span {
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 650;
}

.wallet-actions {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin-top: 14px;
}

.recharge-card {
  background: rgb(var(--color-gray-50));
  border: 1px solid var(--border-base);
  border-radius: 8px;
  display: grid;
  gap: 8px;
  padding: 14px;
}

.recharge-card span {
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 650;
  text-transform: uppercase;
}

.recharge-card strong {
  font-size: 16px;
  font-weight: 650;
}

.recharge-card label {
  color: var(--text-muted);
  display: grid;
  font-size: 12px;
  font-weight: 600;
  gap: 6px;
}

.recharge-row {
  display: grid;
  gap: 8px;
  grid-template-columns: minmax(0, 1fr) auto;
}

.logs {
  display: grid;
  gap: 6px;
  max-height: 360px;
  overflow: auto;
}

.log-row {
  background: rgb(var(--color-gray-50));
  border: 1px solid var(--border-base);
  border-left: 3px solid rgb(var(--color-green-500));
  border-radius: 6px;
  padding: 8px 10px;
}

.log-row.error {
  border-left-color: rgb(var(--color-red-500));
}

.qr-box {
  align-items: center;
  background: rgb(var(--color-gray-50));
  border: 1px dashed var(--border-interactive);
  border-radius: 8px;
  color: var(--text-muted);
  display: flex;
  justify-content: center;
  min-height: 300px;
  padding: 18px;
}

.qr-box img {
  max-width: 320px;
  width: 100%;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.danger {
  background: rgb(var(--color-red-600));
  border-color: rgb(var(--color-red-600));
}

.danger:hover {
  background: rgb(var(--color-red-500));
  border-color: rgb(var(--color-red-500));
}

@media (max-width: 820px) {
  .shell {
    padding: 12px;
  }

  .cards,
  .response-grid {
    grid-template-columns: 1fr;
  }

  .topbar,
  .topbar-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .wallet-actions,
  .recharge-row {
    grid-template-columns: 1fr;
  }

  .wallet-chip {
    justify-content: space-between;
  }
}