/* =========================================================
   Referaly — Base CSS / Design Tokens
   Source of truth derived from Figma design system.
   ========================================================= */

:root {
  /* Brand */
  --color-primary: #7c3aed;
  --color-primary-600: #6d28d9;
  --color-primary-700: #5b21b6;
  --color-primary-50:  #f5f3ff;
  --color-primary-100: #ede9fe;
  --color-primary-200: #ddd6fe;

  /* Neutral text */
  --color-text-900: #111827;
  --color-text-700: #374151;
  --color-text-600: #4b5563;
  --color-text-500: #6b7280;
  --color-text-400: #9ca3af;

  /* Surfaces / borders */
  --color-bg:          #ffffff;
  --color-bg-alt:      #f9fafb;
  --color-border:      #e5e7eb;
  --color-border-soft: #f3f4f6;

  /* Semantic */
  --color-success:    #16a34a;
  --color-success-50: #f0fdf4;
  --color-success-100:#dcfce7;
  --color-warning:    #f59e0b;
  --color-warning-50: #fffbeb;
  --color-danger:     #ef4444;
  --color-danger-50:  #fef2f2;
  --color-info:       #3b82f6;
  --color-info-50:    #eff6ff;

  /* Typography */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.10), 0 2px 4px -2px rgba(0,0,0,0.10);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.10), 0 4px 6px -4px rgba(0,0,0,0.10);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.10), 0 8px 10px -6px rgba(0,0,0,0.10);
  --shadow-purple: 0 10px 15px -3px var(--color-primary-200), 0 4px 6px -4px var(--color-primary-200);

  /* Layout */
  --container-max: 1216px;
  --container-px-desktop: 112px;
  --container-px-mobile:  20px;
  --nav-height: 80px;

  /* Gradients */
  --grad-primary: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%);
  --grad-primary-deep: linear-gradient(135deg, #7c3aed 0%, #5b21b6 100%);
  --grad-soft: linear-gradient(145deg, #f5f3ff 0%, #ffffff 100%);
  --grad-soft-purple: linear-gradient(135deg, #ede9fe 0%, #ddd6fe 100%);
}

/* =========================================================
   Reset & base
   ========================================================= */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + 16px);
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-text-900);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img, svg, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, h6, p { margin: 0; }
input, textarea, select { font-family: inherit; }

/* =========================================================
   Container
   ========================================================= */
.container {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--container-px-desktop);
}
.container-inner {
  max-width: var(--container-max);
  margin: 0 auto;
}
@media (max-width: 1024px) {
  .container { padding: 0 40px; }
}
@media (max-width: 640px) {
  .container { padding: 0 var(--container-px-mobile); }
}

/* =========================================================
   Typography utilities
   ========================================================= */
.text-gradient {
  background: linear-gradient(135deg, #7c3aed 0%, #5b21b6 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.h1 {
  font-size: 64px; line-height: 1.1; font-weight: 800;
  letter-spacing: -0.02em; color: var(--color-text-900);
}
.h2 {
  font-size: 42px; line-height: 1.15; font-weight: 800;
  letter-spacing: -0.01em; color: var(--color-text-900);
}
.h3 { font-size: 28px; line-height: 1.25; font-weight: 700; color: var(--color-text-900); }
.h4 { font-size: 20px; line-height: 1.4; font-weight: 700; color: var(--color-text-900); }
.lead { font-size: 20px; line-height: 1.6; color: var(--color-text-600); }
.muted { color: var(--color-text-600); }

@media (max-width: 900px) {
  .h1 { font-size: 44px; }
  .h2 { font-size: 32px; }
  .h3 { font-size: 24px; }
  .lead { font-size: 18px; }
}
@media (max-width: 640px) {
  .h1 { font-size: 36px; }
  .h2 { font-size: 28px; }
}

/* =========================================================
   Buttons
   ========================================================= */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  font-weight: 600; font-size: 16px; line-height: 24px;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  transition: transform .18s ease, box-shadow .18s ease, background-color .18s ease, filter .18s ease;
  white-space: nowrap;
  cursor: pointer;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 10px 15px -3px rgba(124, 58, 237, 0.35), 0 4px 6px -4px rgba(124, 58, 237, 0.35);
}
.btn-primary:hover {
  background: var(--color-primary-600);
  box-shadow: 0 15px 30px -6px rgba(124, 58, 237, 0.45), 0 6px 12px -4px rgba(124, 58, 237, 0.35);
}
.btn-secondary {
  background: #fff;
  color: var(--color-text-900);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}
.btn-secondary:hover { background: var(--color-bg-alt); }
.btn-ghost {
  background: transparent; color: var(--color-text-600);
}
.btn-lg { padding: 16px 32px; font-size: 18px; }
.btn-sm { padding: 8px 16px; font-size: 14px; }
.btn-block { width: 100%; }

/* Badges / eyebrow labels */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px; border-radius: var(--radius-pill);
  font-size: 13px; font-weight: 600;
  background: var(--color-primary-100);
  color: var(--color-primary);
  border: 1px solid var(--color-primary-200);
}

/* Cards */
.card {
  background: #fff;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 28px;
}
.card-lg { padding: 40px; border-radius: var(--radius-xl); }

/* Icon chip (square w/ rounded corners holding an svg) */
.icon-chip {
  width: 48px; height: 48px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--radius-md);
  background: var(--color-primary-100);
  color: var(--color-primary);
}
.icon-chip svg { width: 24px; height: 24px; }
.icon-chip-lg { width: 64px; height: 64px; border-radius: var(--radius-lg); }
.icon-chip-lg svg { width: 28px; height: 28px; }

/* Section spacing */
.section {
  padding: 96px 0;
}
.section-sm { padding: 64px 0; }
@media (max-width: 900px) {
  .section { padding: 72px 0; }
  .section-sm { padding: 48px 0; }
}
@media (max-width: 640px) {
  .section { padding: 56px 0; }
}

/* Utility */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}
.flex { display: flex; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: 8px; } .gap-md { gap: 16px; } .gap-lg { gap: 24px; }
.text-center { text-align: center; }
.mt-sm { margin-top: 8px; } .mt-md { margin-top: 16px; } .mt-lg { margin-top: 24px; } .mt-xl { margin-top: 48px; }
.mx-auto { margin-left: auto; margin-right: auto; }
.max-w-md { max-width: 640px; } .max-w-lg { max-width: 768px; } .max-w-xl { max-width: 896px; }

/* Gradient bg utility */
.bg-soft { background: var(--grad-soft); }
.bg-primary-deep { background: var(--grad-primary-deep); color: #fff; }
.bg-primary-deep * { color: #fff; }

/* Spacer for fixed nav */
.page { padding-top: var(--nav-height); }

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s ease, transform .7s ease;
  will-change: opacity, transform;
}
.reveal.is-in {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero__visual { animation: none !important; }
}

/* Nice focus ring for keyboard users */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Skip to content link for keyboard users */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 8px;
  z-index: 100;
  background: var(--color-primary);
  color: #fff;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-weight: 600;
  text-decoration: none;
}
.skip-link:focus {
  left: 8px;
  outline: 2px solid #fff;
  outline-offset: 2px;
}