:root {
  --bg: #f4f6f8;
  --surface: #ffffff;
  --surface-muted: #eef3f1;
  --text: #17211d;
  --muted: #5d6b66;
  --border: #d9e1de;
  --accent: #0f766e;
  --accent-strong: #0b5f59;
  --accent-soft: #dff3ef;
  --danger: #b42318;
  --danger-soft: #fde8e4;
  --warning: #9a5b00;
  --warning-soft: #fff3d6;
  --shadow: 0 16px 42px rgba(23, 33, 29, 0.08);
  --radius: 8px;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

button,
input,
select,
textarea {
  font: inherit;
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(12px);
}

.site-header__inner {
  width: min(1120px, calc(100% - 32px));
  min-height: 64px;
  margin: 0 auto;
  display: flex;
  align-items: center;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.brand__mark {
  width: 34px;
  height: 34px;
  display: inline-grid;
  place-items: center;
  border-radius: var(--radius);
  background: var(--accent);
  color: #ffffff;
}

.brand__text {
  font-size: 18px;
}

.page {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 48px;
}

.auth-page {
  min-height: calc(100vh - 145px);
  display: grid;
  place-items: center;
  padding: 24px 0;
}

.panel {
  width: min(100%, 440px);
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.panel--wide {
  width: min(100%, 720px);
}

.page-title,
.panel h1 {
  margin: 0 0 8px;
  font-size: 28px;
  line-height: 1.2;
}

.page-kicker,
.panel-copy {
  margin: 0 0 24px;
  color: var(--muted);
}

.form-grid {
  display: grid;
  gap: 18px;
}

.field,
.form-grid p,
.form-grid div {
  margin: 0;
}

.field label,
.form-grid label {
  display: block;
  margin-bottom: 6px;
  color: var(--text);
  font-size: 14px;
  font-weight: 650;
}

.field input,
.form-grid input,
.form-grid textarea,
.form-grid select {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #ffffff;
  color: var(--text);
}

.field input:focus,
.form-grid input:focus,
.form-grid textarea:focus,
.form-grid select:focus {
  border-color: var(--accent);
  outline: 3px solid var(--accent-soft);
}

.errorlist {
  margin: 0 0 12px;
  padding: 12px 14px;
  border: 1px solid #f4b8b1;
  border-radius: var(--radius);
  background: var(--danger-soft);
  color: var(--danger);
  list-style-position: inside;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 22px;
}

.button,
input[type="submit"] {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  background: var(--accent);
  color: #ffffff;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
}

.button:hover,
input[type="submit"]:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
}

.button--secondary,
input[type="submit"].button--secondary {
  border-color: var(--border);
  background: #ffffff;
  color: var(--text);
}

.button--secondary:hover,
input[type="submit"].button--secondary:hover {
  border-color: #b7c4c0;
  background: var(--surface-muted);
  color: var(--text);
}

.button--danger,
input[type="submit"].button--danger {
  border-color: #f4b8b1;
  background: var(--danger-soft);
  color: var(--danger);
}

.button--danger:hover,
input[type="submit"].button--danger:hover {
  border-color: var(--danger);
  background: #fbd7d1;
  color: var(--danger);
}

.inline-form {
  margin: 0;
}

.alert {
  margin: 0 0 18px;
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface-muted);
  color: var(--text);
}

.alert--error {
  border-color: #f4b8b1;
  background: var(--danger-soft);
  color: var(--danger);
}

.alert--warning {
  border-color: #f4ce8b;
  background: var(--warning-soft);
  color: var(--warning);
}

.alert--success {
  border-color: #8ad7c7;
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.dashboard {
  display: grid;
  gap: 24px;
}

.dashboard-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

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

.dashboard-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.summary-card,
.config-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.summary-card {
  padding: 20px;
}

.summary-card__label {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

.summary-card__value {
  margin: 0;
  font-size: 24px;
  font-weight: 800;
}

.traffic-card {
  grid-column: 1 / -1;
}

.progress-row {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

progress {
  width: 100%;
  height: 12px;
  overflow: hidden;
  border: 0;
  border-radius: 999px;
  background: var(--surface-muted);
}

progress::-webkit-progress-bar {
  background: var(--surface-muted);
}

progress::-webkit-progress-value {
  border-radius: 999px;
  background: var(--accent);
}

progress::-moz-progress-bar {
  border-radius: 999px;
  background: var(--accent);
}

.config-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.config-card {
  min-width: 0;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

.config-card__header,
.config-card__body {
  padding: 20px;
}

.config-card__header {
  border-bottom: 1px solid var(--border);
}

.config-card__title {
  margin: 0;
  font-size: 18px;
}

.config-card__subtitle {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.config-copy-wrap {
  position: relative;
}

.config-string {
  margin: 0;
  padding: 14px 78px 14px 14px;
  min-height: 92px;
  overflow-wrap: anywhere;
  word-break: break-word;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #f7faf9;
  color: #1d2b27;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 13px;
  line-height: 1.55;
}

.config-string__text {
  font: inherit;
}

.config-copy {
  position: absolute;
  top: 10px;
  right: 10px;
  min-width: 64px;
  min-height: 34px;
  padding: 7px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #ffffff;
  box-shadow: 0 8px 20px rgba(23, 33, 29, 0.12);
  color: var(--text);
  font-size: 13px;
  font-weight: 750;
  line-height: 1;
  opacity: 0;
  cursor: pointer;
  transform: translateY(-4px);
  transition:
    opacity 160ms ease,
    transform 160ms ease,
    background-color 160ms ease,
    border-color 160ms ease,
    color 160ms ease;
}

.config-copy-wrap:hover .config-copy,
.config-copy-wrap:focus-within .config-copy {
  opacity: 1;
  transform: translateY(0);
}

.config-copy:hover,
.config-copy:focus {
  border-color: var(--accent);
  outline: 0;
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.config-copy.is-copied {
  border-color: var(--accent);
  background: var(--accent);
  color: #ffffff;
  animation: copy-pulse 360ms ease;
}

@keyframes copy-pulse {
  0% {
    transform: scale(1);
  }

  45% {
    transform: scale(1.06);
  }

  100% {
    transform: scale(1);
  }
}

.qr-frame {
  margin-top: 16px;
  padding: 16px;
  display: grid;
  place-items: center;
  border: 1px dashed #b8c8c3;
  border-radius: var(--radius);
  background: #ffffff;
}

.qr-frame img {
  width: min(240px, 100%);
  height: auto;
  display: block;
}

.empty-state {
  margin: 0;
  padding: 16px;
  border-radius: var(--radius);
  background: var(--warning-soft);
  color: var(--warning);
}

.link-row {
  margin: 20px 0 0;
  color: var(--muted);
}

@media (max-width: 760px) {
  .site-header__inner,
  .page {
    width: min(100% - 24px, 1120px);
  }

  .page {
    padding: 24px 0 36px;
  }

  .panel {
    padding: 22px;
  }

  .page-title,
  .panel h1 {
    font-size: 24px;
  }

  .dashboard-header {
    display: grid;
  }

  .dashboard-actions,
  .form-actions {
    justify-content: stretch;
  }

  .button,
  input[type="submit"],
  .inline-form {
    width: 100%;
  }

  .summary-grid,
  .config-grid {
    grid-template-columns: 1fr;
  }

  .summary-card__value {
    font-size: 21px;
  }
}