:root {
  --background: 222 30% 98%;
  --foreground: 225 18% 16%;
  --primary: 265 84% 57%;
  --secondary: 190 84% 45%;
  --muted: 220 18% 92%;
  --destructive: 0 74% 56%;
  --border: 225 18% 86%;
  --card: 0 0% 100%;
  --shadow-sm: 0 8px 20px rgba(30, 41, 59, 0.08);
  --shadow-md: 0 18px 40px rgba(30, 41, 59, 0.12);
  --shadow-lg: 0 28px 80px rgba(30, 41, 59, 0.18);
  --transition-fast: all 120ms ease;
  --transition-smooth: all 220ms ease;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
}

.dark {
  --background: 230 28% 10%;
  --foreground: 220 20% 94%;
  --primary: 268 92% 68%;
  --secondary: 190 88% 56%;
  --muted: 230 16% 18%;
  --destructive: 0 84% 65%;
  --border: 228 16% 24%;
  --card: 228 20% 13%;
  --shadow-sm: 0 8px 20px rgba(0, 0, 0, 0.22);
  --shadow-md: 0 18px 40px rgba(0, 0, 0, 0.32);
  --shadow-lg: 0 28px 80px rgba(0, 0, 0, 0.42);
}

* {
  box-sizing: border-box;
}

html, body, #root {
  min-height: 100%;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, hsla(var(--secondary), 0.16), transparent 30%),
    radial-gradient(circle at top right, hsla(var(--primary), 0.14), transparent 36%),
    hsl(var(--background));
}

button, input, textarea, select {
  font: inherit;
}

button {
  cursor: pointer;
}

::selection {
  background: hsla(var(--primary), 0.24);
}

.glass {
  background: hsla(var(--card), 0.88);
  backdrop-filter: blur(18px);
}

.card-surface {
  background: hsl(var(--card));
  border: 1px solid hsl(var(--border));
  box-shadow: var(--shadow-sm);
}

.input-base {
  width: 100%;
  background: hsl(var(--card));
  border: 1px solid hsl(var(--border));
  color: hsl(var(--foreground));
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  outline: none;
  transition: var(--transition-fast);
}

.input-base:focus {
  border-color: hsl(var(--primary));
  box-shadow: 0 0 0 4px hsla(var(--primary), 0.14);
}

.btn-primary {
  background: linear-gradient(135deg, hsl(var(--primary)), hsl(var(--secondary)));
  color: white;
  border-radius: var(--radius-md);
  transition: var(--transition-smooth);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: hsla(var(--primary), 0.08);
  color: hsl(var(--primary));
  border: 1px solid hsla(var(--primary), 0.18);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.btn-secondary:hover {
  background: hsla(var(--primary), 0.12);
}

.fade-in {
  animation: fadeIn 220ms ease;
}

.slide-up {
  animation: slideUp 260ms ease;
}

.pulse-soft {
  animation: pulseSoft 1.4s ease-in-out infinite;
}

.grid-bg {
  background-image:
    linear-gradient(hsla(var(--border), 0.5) 1px, transparent 1px),
    linear-gradient(90deg, hsla(var(--border), 0.5) 1px, transparent 1px);
  background-size: 24px 24px;
}

.preview-phone {
  min-height: 620px;
}

.scroll-thin::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

.scroll-thin::-webkit-scrollbar-thumb {
  background: hsla(var(--primary), 0.2);
  border-radius: 999px;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulseSoft {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.55; }
}