/* ── Design Tokens ── */
:root {
  --color-primary: #4F46E5;
  --color-primary-hover: #4338CA;
  --color-secondary: #06B6D4;
  --color-secondary-hover: #0891B2;
  --color-accent: #F59E0B;
  --color-hero-bg: #0F172A;
  --color-surface: #FFFFFF;
  --color-surface-alt: #F8FAFC;
  --color-text: #1E293B;
  --color-text-muted: #64748B;
  --color-text-inverse: #F8FAFC;
  --color-border: #E2E8F0;
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-error: #EF4444;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.15);
  --transition: 0.2s ease;
}

/* ── Reset ── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-surface);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-primary-hover);
}

button {
  font-family: var(--font-sans);
  cursor: pointer;
  border: none;
  background: none;
  font-size: inherit;
}

img, svg {
  display: block;
  max-width: 100%;
}

/* ── Utilities ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 1rem;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}

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

.btn-secondary {
  background: transparent;
  color: white;
  border: 2px solid rgba(255,255,255,0.4);
}

.btn-secondary:hover {
  border-color: white;
  background: rgba(255,255,255,0.1);
}

.btn-accent {
  background: var(--color-accent);
  color: var(--color-hero-bg);
}

.btn-accent:hover {
  background: #D97706;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: white;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Page transition ── */
#app {
  min-height: 100vh;
}

.page-enter {
  animation: fadeIn 0.3s ease;
}

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