/* Taskaway — Design System */
:root {
  /* Colors — Palette principale */
  --color-ink: #0A0E1A;
  --color-paper: #F5F3EE;
  --color-signal: #D4FF4F;
  --color-mist: #E8E5DE;
  --color-slate: #5B6170;
  --color-white: #ffffff;
  --color-line: rgba(10, 14, 26, 0.12);
  --color-line-soft: rgba(10, 14, 26, 0.08);
  --color-line-strong: rgba(10, 14, 26, 0.2);
  --color-muted: rgba(10, 14, 26, 0.6);

  /* Typography */
  --font-heading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  /* Spacing */
  --unit: 4px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;
  --space-16: 64px;
  --space-24: 96px;
  --space-32: 128px;

  /* Radius */
  --radius-none: 0px;
  --radius-sm: 2px;
  --radius-md: 4px;

  /* Sizes */
  --container: 1240px;
  --nav-h: 72px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-body);
  color: var(--color-ink);
  background: var(--color-paper);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: transparent; color: inherit; }
img, svg { display: block; max-width: 100%; }
h1,h2,h3,h4 { font-family: var(--font-heading); font-weight: 600; letter-spacing: -0.03em; margin: 0; }
p { margin: 0; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}
.mono {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-muted);
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-body);
  font-size: 14px; font-weight: 500;
  padding: 13px 20px;
  transition: transform .15s ease, background .2s ease, color .2s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--color-signal); color: var(--color-ink); }
.btn-primary:hover { background: var(--color-ink); color: var(--color-signal); }
.btn-dark { background: var(--color-ink); color: var(--color-paper); }
.btn-dark:hover { background: var(--color-signal); color: var(--color-ink); }
.btn-ghost { background: transparent; color: var(--color-ink); border: 1px solid var(--color-line-strong); }
.btn-ghost:hover { background: var(--color-ink); color: var(--color-paper); border-color: var(--color-ink); }
.btn-lg { font-size: 16px; padding: 18px 28px; }

/* Section */
section { padding: 120px 0; }
.section-head { margin-bottom: 56px; max-width: 720px; }
.section-head .mono { margin-bottom: 16px; display: block; }
.section-head h2 {
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.02;
  margin-bottom: 16px;
}
.section-head p { font-size: 18px; color: var(--color-slate); max-width: 560px; }

@media (max-width: 720px) {
  section { padding: 80px 0; }
  .container { padding: 0 20px; }
  .section-head { margin-bottom: 40px; }
}