:root {
  color-scheme: light dark;
  --bg: var(--tg-theme-bg-color, #f4f7fb);
  --surface: var(--tg-theme-secondary-bg-color, #ffffff);
  --text: var(--tg-theme-text-color, #111827);
  --muted: var(--tg-theme-hint-color, #667085);
  --accent: var(--tg-theme-button-color, #2563eb);
  --accent-text: var(--tg-theme-button-text-color, #ffffff);
  --line: color-mix(in srgb, var(--text) 10%, transparent);
  --shadow: 0 12px 34px rgba(15, 23, 42, 0.09);
  --danger: #dc2626;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  min-height: 100vh;
  min-height: 100dvh;
}

body.modal-open { overflow: hidden; }
button, input { font: inherit; }
button { -webkit-tap-highlight-color: transparent; }

.shell {
  width: min(100%, 720px);
  margin: 0 auto;
  padding: max(22px, env(safe-area-inset-top)) 16px max(30px, env(safe-area-inset-bottom));
}

.hero {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.hero-actions {
  display: flex;
  gap: 9px;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(34px, 10vw, 48px);
  letter-spacing: -0.045em;
  line-height: 1;
}

h2 { margin: 0; }
h3 { margin: 22px 0 10px; font-size: 15px; }

.muted {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.4;
}

.icon-button {
  min-width: 46px;
  height: 46px;
  border: 0;
  border-radius: 15px;
  padding: 0 11px;
  background: var(--surface);
  color: var(--accent);
  box-shadow: var(--shadow);
  font-size: 22px;
  cursor: pointer;
}

.primary-icon {
  background: color-mix(in srgb, var(--accent) 10%, var(--surface));
  font-size: 28px;
}

.status {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
  color: var(--muted);
}

.status.error {
  border-color: rgba(220, 38, 38, 0.28);
  color: var(--danger);
}

.circles {
  display: grid;
  gap: 15px;
}

.circle-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.circle-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 14px 14px 18px;
}

.circle-name {
  margin: 0 0 3px;
  font-size: 21px;
  letter-spacing: -0.025em;
}

.member-count {
  color: var(--muted);
  font-size: 13px;
  white-space: nowrap;
}

.manage-button {
  width: 42px;
  height: 42px;
  border: 0;
  border-radius: 14px;
  background: color-mix(in srgb, var(--text) 5%, transparent);
  color: var(--muted);
  font-weight: 800;
  letter-spacing: 1px;
  cursor: pointer;
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  padding: 0 12px 12px;
}

.signal-button {
  min-height: 78px;
  border: 0;
  border-radius: 17px;
  padding: 12px 10px;
  background: color-mix(in srgb, var(--accent) 9%, var(--surface));
  color: var(--text);
  cursor: pointer;
  transition: transform 120ms ease, opacity 120ms ease, background 120ms ease;
}

.signal-button:active { transform: scale(0.97); }
.signal-button:disabled { opacity: 0.62; cursor: default; }
.signal-button.full { grid-column: 1 / -1; }
.signal-button.active {
  background: rgba(34, 197, 94, 0.14);
  color: #15803d;
}

.signal-emoji {
  display: block;
  margin-bottom: 6px;
  font-size: 27px;
  line-height: 1;
}

.signal-label {
  display: block;
  font-size: 15px;
  font-weight: 700;
}

.active-list {
  display: grid;
  gap: 7px;
  padding: 0 12px 12px;
}

.active-note {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin: 0;
  padding: 10px 12px;
  border-radius: 13px;
  background: rgba(34, 197, 94, 0.11);
  color: #15803d;
  font-size: 13px;
}

.close-signal {
  border: 0;
  border-radius: 10px;
  padding: 7px 9px;
  background: rgba(255,255,255,.65);
  color: #166534;
  font-size: 12px;
  font-weight: 700;
}

.empty {
  padding: 42px 24px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
  text-align: center;
  box-shadow: var(--shadow);
}

.empty-icon { font-size: 46px; margin-bottom: 12px; }
.empty p { color: var(--muted); }

.primary,
.secondary-action,
.danger-action {
  min-height: 46px;
  border: 0;
  border-radius: 14px;
  padding: 12px 15px;
  font-weight: 700;
  cursor: pointer;
}

.primary {
  background: var(--accent);
  color: var(--accent-text);
}

.secondary-action {
  background: color-mix(in srgb, var(--accent) 9%, var(--surface));
  color: var(--text);
}

.secondary-action.compact { min-height: 42px; }

.danger-action {
  background: rgba(220, 38, 38, 0.1);
  color: var(--danger);
}

.text-button {
  border: 0;
  background: transparent;
  padding: 8px;
  font-size: 13px;
  font-weight: 700;
}

.danger-text { color: var(--danger); }

footer {
  padding: 24px 10px 4px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
  text-align: center;
}

.backdrop {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-top: 60px;
  background: rgba(15, 23, 42, 0.36);
  backdrop-filter: blur(3px);
}

.backdrop[hidden] { display: none; }
.backdrop.centered { align-items: center; padding: 20px; }

.sheet {
  width: min(100%, 720px);
  max-height: 88dvh;
  overflow-y: auto;
  border-radius: 24px 24px 0 0;
  padding: 8px 18px calc(20px + env(safe-area-inset-bottom));
  background: var(--surface);
  box-shadow: 0 -20px 60px rgba(15, 23, 42, .22);
}

.sheet-handle {
  width: 42px;
  height: 5px;
  margin: 3px auto 12px;
  border-radius: 99px;
  background: color-mix(in srgb, var(--text) 18%, transparent);
}

.sheet-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.close-button {
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 13px;
  background: color-mix(in srgb, var(--text) 6%, transparent);
  color: var(--text);
  font-size: 26px;
}

.member-list {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 16px;
}

.member-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 52px;
  padding: 9px 12px;
  border-bottom: 1px solid var(--line);
}

.member-row:last-child { border-bottom: 0; }
.member-identity { display: flex; align-items: center; gap: 8px; min-width: 0; }
.member-identity strong { overflow: hidden; text-overflow: ellipsis; }
.owner-badge {
  border-radius: 999px;
  padding: 3px 7px;
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  color: var(--accent);
  font-size: 10px;
  font-weight: 700;
}

.management-actions {
  display: grid;
  gap: 9px;
  margin-top: 18px;
}

.input-panel {
  width: min(100%, 430px);
  border-radius: 22px;
  padding: 20px;
  background: var(--surface);
  box-shadow: 0 22px 70px rgba(15, 23, 42, .28);
}

.input-panel h2 { margin-bottom: 14px; }
.input-panel input {
  width: 100%;
  height: 50px;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0 14px;
  background: var(--bg);
  color: var(--text);
  outline: none;
}
.input-panel input:focus { border-color: var(--accent); }
.input-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; margin-top: 14px; }

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(18px + env(safe-area-inset-bottom));
  z-index: 80;
  max-width: calc(100% - 32px);
  transform: translate(-50%, 24px);
  opacity: 0;
  pointer-events: none;
  border-radius: 14px;
  padding: 12px 16px;
  background: #111827;
  color: #fff;
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.22);
  transition: opacity 180ms ease, transform 180ms ease;
  text-align: center;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (min-width: 560px) {
  .signal-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .signal-button.full { grid-column: auto; }
  .sheet { border-radius: 24px; margin-bottom: 20px; }
}