:root {
  color-scheme: light dark;
  --orange: #f38020;
  --orange-hover: #e56f0f;
  --orange-soft: rgba(243, 128, 32, 0.14);
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.06), 0 8px 24px rgba(0, 0, 0, 0.04);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f5f5f5;
    --bg-elevated: #ffffff;
    --border: #e2e2e2;
    --border-strong: #cfcfcf;
    --text: #111111;
    --text-secondary: #525252;
    --text-muted: #737373;
    --input-bg: #ffffff;
    --danger-bg: #fff5f5;
    --danger-text: #b42318;
    --danger-border: #fecdca;
    --ok-bg: #f0fdf4;
    --ok-text: #166534;
    --ok-border: #bbf7d0;
    --badge-off-bg: #f0f0f0;
    --badge-off-text: #737373;
    --badge-on-bg: var(--orange-soft);
    --badge-on-text: #c2410c;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0a0a;
    --bg-elevated: #141414;
    --border: #262626;
    --border-strong: #404040;
    --text: #f5f5f5;
    --text-secondary: #d4d4d4;
    --text-muted: #a3a3a3;
    --input-bg: #0f0f0f;
    --danger-bg: #1a0f0f;
    --danger-text: #fca5a5;
    --danger-border: #3f1f1f;
    --ok-bg: #0f1a14;
    --ok-text: #86efac;
    --ok-border: #1f3f2a;
    --badge-off-bg: #1f1f1f;
    --badge-off-text: #a3a3a3;
    --badge-on-bg: rgba(243, 128, 32, 0.18);
    --badge-on-text: #fdba74;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 12px 32px rgba(0, 0, 0, 0.35);
  }
}

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
}

.topbar-inner {
  max-width: 520px;
  margin: 0 auto;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--orange);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.logo svg {
  width: 18px;
  height: 18px;
  fill: #fff;
}

.brand h1 {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.brand p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.wrap {
  flex: 1;
  max-width: 520px;
  width: 100%;
  margin: 0 auto;
  padding: 24px 20px 48px;
}

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}

.card-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}

.card-head .bar {
  width: 4px;
  height: 20px;
  border-radius: 2px;
  background: var(--orange);
}

.card h2 {
  font-size: 1rem;
  font-weight: 650;
}

.hint {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 20px;
}

.vk-bot-hint a {
  color: var(--orange);
  font-weight: 500;
  text-decoration: none;
}

.vk-bot-hint a:hover {
  text-decoration: underline;
}

.vk-token-wrap.hidden {
  display: none;
}

.hidden { display: none !important; }

.auth-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
}

.auth-tab {
  flex: 1;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--input-bg);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.auth-tab:hover {
  border-color: var(--border-strong);
  color: var(--text);
}

.auth-tab.active {
  border-color: var(--orange);
  color: var(--orange);
  background: var(--orange-soft);
}

.qr-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.qr-image {
  display: block;
  width: 220px;
  height: 220px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #fff;
  padding: 8px;
}

.qr-hint {
  color: var(--text-muted);
  font-size: 0.8125rem;
  text-align: center;
  line-height: 1.5;
  max-width: 320px;
}

.qr-hint strong {
  color: var(--text-secondary);
  font-weight: 600;
}

#form-qr .secondary {
  width: 100%;
}

label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
  margin-top: 16px;
}

label:first-child { margin-top: 0; }

.opt {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--orange);
}

input[type="text"],
input[type="tel"],
input[type="password"],
input[type="number"] {
  width: 100%;
  padding: 11px 13px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--input-bg);
  color: var(--text);
  font-size: 0.95rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}

input::placeholder {
  color: var(--text-muted);
}

input:focus {
  outline: none;
  border-color: var(--orange);
  box-shadow: 0 0 0 3px var(--orange-soft);
}

.check {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  margin-top: 12px;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.check input {
  width: 16px;
  height: 16px;
  accent-color: var(--orange);
}

button {
  width: 100%;
  margin-top: 16px;
  padding: 12px 16px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s, transform 0.1s;
}

button:active:not(:disabled) { transform: scale(0.99); }
button:hover:not(:disabled) { opacity: 0.92; }
button:disabled { opacity: 0.45; cursor: not-allowed; }

button.primary {
  background: var(--orange);
  color: #ffffff;
}

button.primary:hover:not(:disabled) {
  background: var(--orange-hover);
  opacity: 1;
}

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

button.danger {
  background: var(--danger-bg);
  color: var(--danger-text);
  border: 1px solid var(--danger-border);
}

button.ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.status-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding-bottom: 16px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.label {
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.value {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
}

.badge::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
}

.badge.on {
  background: var(--badge-on-bg);
  color: var(--badge-on-text);
}

.badge.off {
  background: var(--badge-off-bg);
  color: var(--badge-off-text);
}

.actions {
  display: grid;
  gap: 10px;
  margin-top: 20px;
}

.actions button { margin-top: 0; }

.alert {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  font-size: 0.875rem;
  border: 1px solid transparent;
}

.alert.error {
  background: var(--danger-bg);
  color: var(--danger-text);
  border-color: var(--danger-border);
}

.alert.ok {
  background: var(--ok-bg);
  color: var(--ok-text);
  border-color: var(--ok-border);
}

.settings { margin-top: 4px; }

.footer-note {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 8px;
}