:root {
  --bg: #f4f6f9;
  --panel-bg: #ffffff;
  --header-start: #0f2743;
  --header-end: #1c4b73;
  --text: #1a2733;
  --muted: #64748b;
  --primary: #2f80ed;
  --primary-dark: #1f66c9;
  --danger: #e5484d;
  --danger-dark: #c53236;
  --success: #1a9c5c;
  --border: #e3e8ef;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  background: linear-gradient(135deg, var(--header-start), var(--header-end));
  color: #fff;
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar h1 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.2px;
}

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 16px;
}

.panel {
  background: var(--panel-bg);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 16px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.panel h2 {
  margin: 0 0 14px;
  font-size: 1.1rem;
}

.panel h3 {
  margin: 20px 0 10px;
  font-size: 0.95rem;
  color: var(--muted);
}

.computer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

@media (min-width: 640px) {
  .computer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .computer-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.computer-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  background: #fbfcfe;
}

.computer-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.computer-name {
  font-weight: 600;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.computer-name::before {
  content: "\1F5A5";
  font-size: 1rem;
  opacity: 0.6;
}

.btn {
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 0.9rem;
  cursor: pointer;
  min-height: 40px;
  transition: background 0.15s ease, transform 0.05s ease;
  white-space: nowrap;
}

.btn:active { transform: scale(0.97); }

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }

.btn-ghost { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,0.5); }
.btn-ghost:hover { background: rgba(255,255,255,0.15); }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-dark); }

.btn-confirm { background: var(--success); color: #fff; }

.wake-auth-row {
  display: flex;
  gap: 8px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.wake-auth-row.hidden { display: none; }

.wake-auth-row input {
  flex: 1;
  min-width: 120px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.9rem;
}

.hidden { display: none !important; }

.field {
  margin-bottom: 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.field label {
  font-size: 0.85rem;
  color: var(--muted);
}

.field input {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
}

.add-form {
  display: grid;
  gap: 4px;
}

.add-form .btn { margin-top: 6px; }

.manage-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.manage-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fbfcfe;
  flex-wrap: wrap;
}

.empty-state {
  color: var(--muted);
  font-size: 0.9rem;
}

.toast {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  padding: 12px 18px;
  border-radius: 10px;
  color: #fff;
  font-size: 0.9rem;
  z-index: 100;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  max-width: 90%;
  text-align: center;
}

.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }