.app {
  width: min(1120px, 100%);
  min-height: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  padding: 1.25rem;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.home-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--surface-border);
  background: var(--surface);
  color: var(--muted);
  text-decoration: none;
  transition: color 160ms ease, border-color 160ms ease, background 160ms ease;
  flex-shrink: 0;
}
.home-btn:hover {
  color: var(--text);
  border-color: var(--surface-border-strong);
  background: var(--surface-strong);
}
.home-btn svg { width: 17px; height: 17px; }

.topbar-actions {
  display: inline-flex;
  border: 1px solid var(--surface-border);
  border-radius: 999px;
  background: var(--surface);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  padding: 0.24rem;
  box-shadow: var(--shadow-md);
}

.mode-btn {
  border: 0;
  border-radius: 999px;
  padding: 0.5rem 0.95rem;
  color: var(--muted);
  background: transparent;
  font-weight: 500;
  cursor: pointer;
  letter-spacing: 0.01em;
  transition: color 160ms ease, background 160ms ease;
}

.mode-btn.active {
  color: var(--text);
  background: linear-gradient(180deg, rgba(60, 110, 113, 0.38), rgba(60, 110, 113, 0.14));
}

.display-wrap {
  border: 1px solid var(--surface-border-strong);
  background: linear-gradient(160deg, rgba(60, 110, 113, 0.12), rgba(26, 30, 30, 0.94));
  border-radius: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(1rem, 2.4vw, 2rem);
  min-height: min(48vh, 440px);
  box-shadow: var(--shadow-lg);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  overflow: hidden;
}

.display-main {
  display: grid;
  place-items: center;
  width: 100%;
}

.status {
  margin: 0.55rem 0 0.1rem;
  color: var(--muted);
  font-size: clamp(0.95rem, 1.6vw, 1.08rem);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.name-display {
  margin: 0;
  font-size: clamp(3rem, 14vw, 12rem);
  line-height: 1;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-shadow: 0 8px 36px rgba(0, 0, 0, 0.46);
  text-align: center;
  word-break: break-word;
  max-width: 100%;
  transition: color 200ms ease;
}

.name-display.animating {
  color: var(--muted);
}

.counter {
  margin: 0.5rem 0 0;
  color: var(--muted);
  font-size: clamp(0.85rem, 1.2vw, 1rem);
  letter-spacing: 0.04em;
}

.panel {
  border: 1px solid var(--surface-border);
  background: var(--surface);
  border-radius: 0;
  padding: 0.95rem;
  display: grid;
  gap: 0.9rem;
  box-shadow: var(--shadow-md);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.hidden { display: none; }

label {
  display: grid;
  gap: 0.42rem;
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

textarea, input {
  width: 100%;
  border: 1px solid var(--surface-border);
  border-radius: 0;
  background: var(--surface-strong);
  color: var(--text);
  padding: 0.64rem 0.7rem;
  font-size: 1rem;
  font-family: inherit;
  outline: none;
  transition: border-color 160ms ease, box-shadow 160ms ease;
  resize: vertical;
}

textarea:focus, input:focus {
  border-color: rgba(92, 158, 161, 0.65);
  box-shadow: 0 0 0 4px rgba(60, 110, 113, 0.14);
}

.pick-options {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.toggle-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text);
  text-transform: none;
  letter-spacing: 0;
  font-size: 0.9rem;
}

.toggle-label input {
  width: 1rem;
  height: 1rem;
  accent-color: var(--accent);
}

.groups-setup {
  display: flex;
  align-items: flex-end;
  gap: 0.85rem;
  flex-wrap: wrap;
}

.groups-setup label {
  flex: 0 0 140px;
}

.groups-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.75rem;
}

.group-card {
  border: 1px solid var(--surface-border);
  border-radius: 0;
  background: rgba(26, 30, 30, 0.6);
  padding: 0.7rem;
}

.group-card h3 {
  margin: 0 0 0.4rem;
  font-size: 0.82rem;
  color: var(--accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.group-card ul {
  margin: 0;
  padding-left: 1.1rem;
  list-style: disc;
}

.group-card li {
  margin: 0.15rem 0;
  color: var(--text);
  font-size: 0.95rem;
}

.preset-btn, .action-btn {
  border: 1px solid var(--surface-border);
  background: linear-gradient(180deg, rgba(60, 110, 113, 0.22), rgba(30, 34, 34, 0.85));
  color: var(--text);
  border-radius: 0;
  padding: 0.6rem 0.9rem;
  cursor: pointer;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: transform 120ms ease, border-color 140ms ease, background 140ms ease;
}

.preset-btn:hover, .action-btn:hover {
  border-color: rgba(60, 110, 113, 0.5);
  transform: translateY(-1px);
}

.preset-btn:active, .action-btn:active {
  transform: translateY(0);
}

.action-btn.primary {
  border-color: rgba(60, 110, 113, 0.65);
  background: linear-gradient(180deg, rgba(60, 110, 113, 0.45), rgba(45, 80, 82, 0.3));
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.68rem;
}

.help {
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.83rem;
}

kbd {
  border: 1px solid var(--surface-border);
  border-radius: 4px;
  padding: 0.16rem 0.42rem;
  background: rgba(26, 30, 30, 0.95);
  color: var(--text);
}

@media (max-width: 700px) {
  .app { padding: 0.9rem; }
  .topbar { justify-content: center; }
}