:root {
  /* ── Colors (HSL values — warm neutrals + optimistic teal/indigo) ── */
  --background: 36 33% 98%;
  --foreground: 222 47% 11%;
  --primary: 198 88% 38%;
  --primary-foreground: 210 40% 98%;
  --secondary: 210 40% 96%;
  --secondary-foreground: 222 47% 11%;
  --accent: 233 92% 95%;
  --accent-foreground: 233 40% 20%;
  --muted: 210 40% 96%;
  --muted-foreground: 215 16% 47%;
  --destructive: 0 84% 60%;
  --border: 214 32% 91%;
  --ring: 198 88% 38%;
  --card: 0 0% 100%;
  --card-foreground: 222 47% 11%;

  /* Brand extras */
  --brand-indigo: 233 78% 56%;
  --brand-teal: 198 88% 38%;
  --brand-sun: 38 92% 55%;

  /* ── Shadows (use primary tint for elegance) ── */
  --shadow-sm: 0 1px 2px 0 hsl(var(--foreground) / 0.05);
  --shadow-md: 0 4px 6px -1px hsl(var(--foreground) / 0.08), 0 2px 4px -2px hsl(var(--foreground) / 0.05);
  --shadow-lg: 0 10px 15px -3px hsl(var(--foreground) / 0.08), 0 4px 6px -4px hsl(var(--foreground) / 0.03);
  --shadow-elegant: 0 10px 30px -10px hsl(var(--primary) / 0.28);

  /* ── Gradients ── */
  --gradient-primary: linear-gradient(135deg, hsl(var(--brand-teal)), hsl(var(--brand-indigo)));
  --gradient-subtle: linear-gradient(135deg, hsl(var(--background)), hsl(var(--secondary)));
  --gradient-hero: radial-gradient(1200px 600px at 20% 10%, hsl(var(--brand-indigo) / 0.18), transparent 55%), radial-gradient(900px 500px at 90% 20%, hsl(var(--brand-teal) / 0.18), transparent 55%), linear-gradient(180deg, hsl(var(--background)), hsl(var(--background)));

  /* ── Transitions ── */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);

  /* ── Border Radius ── */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Typography */
  --font-sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  --font-display: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
}

.dark, [data-theme="dark"] {
  --background: 222 47% 9%;
  --foreground: 210 40% 98%;
  --primary: 198 88% 45%;
  --primary-foreground: 222 47% 11%;
  --secondary: 222 35% 14%;
  --secondary-foreground: 210 40% 98%;
  --accent: 233 40% 18%;
  --accent-foreground: 210 40% 98%;
  --muted: 222 35% 14%;
  --muted-foreground: 215 20% 70%;
  --destructive: 0 84% 60%;
  --border: 222 28% 20%;
  --ring: 198 88% 45%;
  --card: 222 40% 12%;
  --card-foreground: 210 40% 98%;
  --shadow-elegant: 0 12px 34px -12px hsl(var(--primary) / 0.35);
  --gradient-hero: radial-gradient(1200px 600px at 20% 10%, hsl(var(--brand-indigo) / 0.22), transparent 55%), radial-gradient(900px 500px at 90% 20%, hsl(var(--brand-teal) / 0.22), transparent 55%), linear-gradient(180deg, hsl(var(--background)), hsl(var(--background)));
}

html, body {
  font-family: var(--font-sans);
}

/* Focus ring */
:where(a, button, input, textarea, select, [role="button"]) {
  outline: none;
}
:where(a, button, input, textarea, select, [role="button"]):focus-visible {
  box-shadow: 0 0 0 3px hsl(var(--ring) / 0.25);
}

/* Subtle motion */
@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }
}

/* Nice scrollbar (optional) */
*::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
*::-webkit-scrollbar-thumb {
  background: hsl(var(--muted-foreground) / 0.25);
  border-radius: var(--radius-full);
}
*::-webkit-scrollbar-track {
  background: transparent;
}

/* Utility: gradient text */
.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Utility: subtle grid pattern */
.hero-grid {
  background-image: radial-gradient(hsl(var(--foreground) / 0.06) 1px, transparent 1px);
  background-size: 18px 18px;
  mask-image: radial-gradient(closest-side, black 60%, transparent 100%);
  opacity: 0.55;
}

/* Skeleton shimmer */
.skeleton {
  background: linear-gradient(90deg, hsl(var(--muted)) 0%, hsl(var(--secondary)) 50%, hsl(var(--muted)) 100%);
  background-size: 200% 100%;
  animation: shimmer 1.2s ease-in-out infinite;
  border-radius: var(--radius-md);
}
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Card hover */
.card-hover {
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}
.card-hover:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-elegant);
}

/* Button micro-interaction */
.btn {
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}
.btn:active {
  transform: translateY(1px);
}

/* Toast container spacing */
.toast-stack {
  pointer-events: none;
}
.toast {
  pointer-events: auto;
}