/* Creative Ads — shared brand system
   Dark premium + vibrant gradients + glassmorphism + strong type.
   Used by the landing page and the app prototype. */

:root {
  /* base */
  --bg:      #0a0910;
  --bg-2:    #100d1a;
  --panel:   #161126;
  --panel-2: #1e1832;
  --line:    rgba(255,255,255,0.10);
  --line-2:  rgba(255,255,255,0.06);

  /* ink */
  --ink:   #f8f6ff;
  --sub:   rgba(248,246,255,0.64);
  --faint: rgba(248,246,255,0.40);
  --ghost: rgba(248,246,255,0.22);

  /* vibrant accents (shared chroma/lightness, varied hue) */
  --violet:  oklch(66% 0.23 288);
  --magenta: oklch(67% 0.25 350);
  --coral:   oklch(72% 0.19 35);
  --amber:   oklch(82% 0.15 78);
  --cyan:    oklch(78% 0.14 215);
  --lime:    oklch(84% 0.18 138);

  --grad: linear-gradient(100deg, var(--violet), var(--magenta) 52%, var(--coral));
  --grad-soft: linear-gradient(120deg, color-mix(in oklch, var(--violet) 22%, transparent), color-mix(in oklch, var(--coral) 22%, transparent));

  --r-sm: 12px;
  --r:    18px;
  --r-lg: 26px;
  --r-xl: 36px;

  --shadow: 0 30px 80px rgba(0,0,0,0.5);
  --shadow-glow: 0 24px 70px color-mix(in oklch, var(--magenta) 36%, transparent);

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-ui: 'Plus Jakarta Sans', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  --maxw: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-ui);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
::selection { background: color-mix(in oklch, var(--magenta) 50%, transparent); color: #fff; }

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ── typography ─────────────────────────────────────────── */
.display { font-family: var(--font-display); font-weight: 700; letter-spacing: -0.03em; line-height: 0.98; }
.mono { font-family: var(--font-mono); }
.grad-text {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.eyebrow {
  font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.28em;
  text-transform: uppercase; color: var(--faint);
}

/* ── layout ─────────────────────────────────────────────── */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
section { position: relative; }

/* ── buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-ui); font-weight: 700; font-size: 16px;
  padding: 15px 26px; border-radius: 100px; cursor: pointer;
  border: 1px solid transparent; white-space: nowrap;
  transition: transform .18s cubic-bezier(.2,.8,.2,1), box-shadow .25s, background .2s, border-color .2s;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--grad); color: #fff; box-shadow: var(--shadow-glow); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 30px 80px color-mix(in oklch, var(--magenta) 48%, transparent); }
.btn-ghost { background: rgba(255,255,255,0.04); color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { background: rgba(255,255,255,0.09); border-color: rgba(255,255,255,0.2); }
.btn-sm { padding: 10px 18px; font-size: 14px; }

/* chips */
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 15px; border-radius: 100px; font-weight: 600; font-size: 14px;
  border: 1px solid var(--line); background: rgba(255,255,255,0.03);
}
.chip .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--grad); }

/* glass card */
.glass {
  background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  backdrop-filter: blur(14px);
}

/* ── decorative backdrop ────────────────────────────────── */
.aurora { position: absolute; inset: 0; overflow: hidden; pointer-events: none; z-index: 0; }
.aurora .blob {
  position: absolute; border-radius: 50%; filter: blur(70px); opacity: 0.5;
  will-change: transform;
}
.grain {
  position: absolute; inset: 0; pointer-events: none; opacity: 0.05; z-index: 1;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* reveal-on-scroll */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }
.reveal.d4 { transition-delay: .32s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}