:root {
  --background: 42 38% 96%;
  --foreground: 216 35% 13%;
  --primary: 166 78% 31%;
  --secondary: 28 86% 54%;
  --muted: 216 16% 52%;
  --destructive: 0 76% 54%;
  --border: 42 20% 82%;
  --card: 0 0% 100%;
  --shadow-sm: 0 6px 18px rgba(17, 24, 39, 0.08);
  --shadow-md: 0 18px 45px rgba(17, 24, 39, 0.12);
  --shadow-lg: 0 28px 80px rgba(17, 24, 39, 0.18);
  --transition-fast: 160ms ease;
  --transition-smooth: 260ms cubic-bezier(.2,.8,.2,1);
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
}

.dark {
  --background: 217 35% 9%;
  --foreground: 42 40% 94%;
  --primary: 164 70% 45%;
  --secondary: 30 90% 58%;
  --muted: 216 17% 70%;
  --destructive: 0 74% 60%;
  --border: 217 24% 24%;
  --card: 217 33% 13%;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, hsl(var(--primary) / 0.18), transparent 34rem),
    radial-gradient(circle at top right, hsl(var(--secondary) / 0.16), transparent 30rem),
    hsl(var(--background));
  color: hsl(var(--foreground));
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.bg-1 { background: hsl(var(--background)); }
.bg-2 { background: hsl(var(--card)); }
.bg-3 { background: hsl(var(--primary) / 0.08); }
.bg-4 { background: hsl(var(--secondary) / 0.12); }
.text-primary { color: hsl(var(--foreground)); }
.text-secondary { color: hsl(var(--muted)); }
.text-tertiary { color: hsl(var(--muted) / 0.78); }
.accent { color: hsl(var(--primary)); }

.card {
  background: hsl(var(--card) / 0.88);
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(18px);
}

.btn-primary,
.btn-secondary,
.btn-ghost,
.btn-danger {
  min-height: 44px;
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  font-weight: 800;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}
.btn-primary {
  color: white;
  background: linear-gradient(135deg, hsl(var(--primary)), hsl(181 72% 34%));
  box-shadow: 0 14px 30px hsl(var(--primary) / 0.25);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 18px 36px hsl(var(--primary) / 0.3); }
.btn-secondary {
  color: hsl(var(--foreground));
  background: hsl(var(--secondary) / 0.14);
  border: 1px solid hsl(var(--secondary) / 0.26);
}
.btn-ghost {
  color: hsl(var(--foreground));
  background: hsl(var(--card) / 0.56);
  border: 1px solid hsl(var(--border));
}
.btn-danger {
  color: white;
  background: hsl(var(--destructive));
}

.input {
  width: 100%;
  min-height: 48px;
  border-radius: var(--radius-md);
  border: 1px solid hsl(var(--border));
  background: hsl(var(--card));
  color: hsl(var(--foreground));
  padding: 0.75rem 0.9rem;
  font-size: max(16px, 1rem);
  outline: none;
  transition: border var(--transition-fast), box-shadow var(--transition-fast);
}
.input:focus {
  border-color: hsl(var(--primary));
  box-shadow: 0 0 0 4px hsl(var(--primary) / 0.16);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border-radius: 999px;
  padding: 0.35rem 0.65rem;
  background: hsl(var(--primary) / 0.12);
  color: hsl(var(--primary));
  font-size: 0.82rem;
  font-weight: 800;
}

.safe-bottom { padding-bottom: max(1rem, env(safe-area-inset-bottom)); }
.safe-top { padding-top: max(1rem, env(safe-area-inset-top)); }

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none !important;
}

pre {
  white-space: pre-wrap;
  word-break: break-word;
}