*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --font-heading: "Sora", sans-serif;
  --font-body: "Plus Jakarta Sans", sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  --container-max-width: 1320px;
  --radius-sm: 14px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-pill: 999px;
  --shadow-sm: 0 14px 34px rgba(37, 36, 64, 0.08);
  --shadow-md: 0 24px 54px rgba(37, 36, 64, 0.12);
  --shadow-lg: 0 42px 110px rgba(37, 36, 64, 0.16);
  --transition: 220ms ease;
}

html[data-theme="light"] {
  --bg: #fbfbfd;
  --bg-elevated: rgba(255, 255, 255, 0.58);
  --bg-surface: rgba(255, 255, 255, 0.84);
  --bg-soft: rgba(247, 247, 251, 0.76);
  --bg-soft-strong: #efeff5;
  --bg-contrast: #151214;
  --text: #221d20;
  --text-soft: #5d555a;
  --text-muted: #8b8288;
  --border: rgba(24, 20, 23, 0.08);
  --border-strong: rgba(24, 20, 23, 0.12);
  --accent: #221d20;
  --accent-strong: #221d20;
  --accent-soft: rgba(34, 29, 32, 0.06);
  --accent-warm: #ff9470;
  --accent-warm-strong: #dd7652;
  --accent-warm-soft: rgba(255, 148, 112, 0.16);
  --navy-soft: rgba(124, 135, 255, 0.08);
  --gradient-brand: linear-gradient(135deg, #171518 0%, #4f4a4f 100%);
  --gradient-brand-soft: linear-gradient(135deg, rgba(137, 145, 255, 0.14) 0%, rgba(255, 160, 114, 0.14) 100%);
  --page-background:
    radial-gradient(circle at 18% 18%, rgba(198, 208, 255, 0.18), transparent 24%),
    radial-gradient(circle at 56% 22%, rgba(255, 216, 116, 0.18), transparent 20%),
    radial-gradient(circle at 68% 48%, rgba(255, 183, 145, 0.2), transparent 24%),
    radial-gradient(circle at 78% 40%, rgba(69, 64, 73, 0.18), transparent 18%),
    radial-gradient(circle at 82% 76%, rgba(255, 136, 106, 0.18), transparent 24%),
    linear-gradient(180deg, #ffffff 0%, #fbfbfd 52%, #f8f8fc 100%);
  --gradient-hero:
    radial-gradient(circle at 50% 18%, rgba(255, 219, 131, 0.22), transparent 20%),
    radial-gradient(circle at 40% 32%, rgba(255, 200, 160, 0.16), transparent 18%),
    radial-gradient(circle at 68% 34%, rgba(81, 74, 80, 0.18), transparent 18%),
    radial-gradient(circle at 18% 22%, rgba(193, 203, 255, 0.16), transparent 20%),
    radial-gradient(circle at 80% 74%, rgba(255, 136, 106, 0.16), transparent 22%);
  --surface-gradient: linear-gradient(180deg, rgba(255, 255, 255, 0.94) 0%, rgba(252, 252, 255, 0.9) 100%);
  --surface-gradient-strong:
    radial-gradient(circle at top right, rgba(255, 214, 130, 0.12), transparent 30%),
    radial-gradient(circle at bottom left, rgba(193, 203, 255, 0.12), transparent 26%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, rgba(251, 251, 255, 0.94) 100%);
  --chat-user: rgba(255, 255, 255, 0.96);
  --chat-bot: rgba(255, 255, 255, 0.96);
  --canvas-node: #dfdff0;
  --canvas-line: rgba(34, 29, 32, 0.1);
  --canvas-highlight: #8a91ff;
  --canvas-warning: #ff8e70;
  --canvas-story: #c2a2ff;
}

html[data-theme="dark"] {
  --bg: #040405;
  --bg-elevated: rgba(4, 5, 8, 0.94);
  --bg-surface: rgba(12, 12, 16, 0.9);
  --bg-soft: rgba(18, 18, 24, 0.9);
  --bg-soft-strong: #121219;
  --bg-contrast: #f5f3f2;
  --text: #f5f3f2;
  --text-soft: #cbc3c8;
  --text-muted: #9b9097;
  --border: rgba(245, 243, 242, 0.08);
  --border-strong: rgba(245, 243, 242, 0.12);
  --accent: #f5f3f2;
  --accent-strong: #f5f3f2;
  --accent-soft: rgba(245, 243, 242, 0.08);
  --accent-warm: #cf8a6f;
  --accent-warm-strong: #e3ad93;
  --accent-warm-soft: rgba(207, 138, 111, 0.14);
  --navy-soft: rgba(164, 177, 218, 0.08);
  --shadow-sm: 0 12px 28px rgba(0, 0, 0, 0.24);
  --shadow-md: 0 22px 52px rgba(0, 0, 0, 0.34);
  --shadow-lg: 0 34px 96px rgba(0, 0, 0, 0.42);
  --gradient-brand: linear-gradient(135deg, #ffffff 0%, #8d848a 100%);
  --gradient-brand-soft: linear-gradient(135deg, rgba(128, 135, 226, 0.1) 0%, rgba(207, 138, 111, 0.1) 100%);
  --page-background:
    radial-gradient(circle at 18% 10%, rgba(100, 110, 188, 0.07), transparent 20%),
    radial-gradient(circle at 55% 16%, rgba(195, 146, 90, 0.06), transparent 16%),
    radial-gradient(circle at 78% 32%, rgba(145, 101, 85, 0.08), transparent 18%),
    radial-gradient(circle at 62% 36%, rgba(255, 255, 255, 0.035), transparent 12%),
    linear-gradient(180deg, #040405 0%, #050507 52%, #040405 100%);
  --gradient-hero:
    radial-gradient(circle at 48% 18%, rgba(195, 146, 90, 0.08), transparent 16%),
    radial-gradient(circle at 66% 30%, rgba(145, 101, 85, 0.09), transparent 18%),
    radial-gradient(circle at 22% 18%, rgba(100, 110, 188, 0.07), transparent 20%),
    radial-gradient(circle at 74% 56%, rgba(255, 255, 255, 0.03), transparent 15%);
  --surface-gradient: linear-gradient(180deg, rgba(12, 12, 16, 0.97) 0%, rgba(9, 9, 13, 0.94) 100%);
  --surface-gradient-strong:
    radial-gradient(circle at top right, rgba(195, 146, 90, 0.045), transparent 24%),
    radial-gradient(circle at bottom left, rgba(100, 110, 188, 0.06), transparent 22%),
    linear-gradient(180deg, rgba(12, 12, 16, 0.985) 0%, rgba(9, 9, 13, 0.95) 100%);
  --chat-user: rgba(21, 21, 26, 0.96);
  --chat-bot: rgba(12, 12, 16, 0.97);
  --canvas-node: #2f3040;
  --canvas-line: rgba(245, 243, 242, 0.12);
  --canvas-highlight: #8a91ff;
  --canvas-warning: #ff9f77;
  --canvas-story: #c2a2ff;
}

html {
  scroll-behavior: smooth;
  scrollbar-gutter: stable;
}

body {
  margin: 0;
  font-family: var(--font-body);
  min-height: 100vh;
  background: var(--page-background);
  background-color: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

a {
  color: inherit;
}

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

button {
  border: 0;
  background: transparent;
  color: inherit;
}

main {
  position: relative;
  z-index: 1;
}

.container {
  width: min(var(--container-max-width), calc(100% - 2rem));
  margin: 0 auto;
}

.section {
  padding: 5.5rem 0;
}

.section-header {
  max-width: 760px;
  margin-bottom: 2rem;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  color: var(--accent-strong);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-kicker::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 6px var(--accent-soft);
}

.section-title,
.hero-title,
.cta-title {
  margin: 0;
  font-family: var(--font-heading);
  letter-spacing: -0.04em;
  line-height: 1.05;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3.25rem);
}

.section-copy,
.hero-copy p,
.lead {
  margin: 0;
  color: var(--text-soft);
  font-size: 1.02rem;
  line-height: 1.8;
}

/* Clear separation between section title and lead subtext */
.section-title + .lead {
  margin-top: 0.85rem;
}

.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
}

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

.muted {
  color: var(--text-muted);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

::selection {
  background: var(--accent-soft);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}