/* ============================================================
   BASE.CSS — CSS Custom Properties, Reset, Typography
   Paradosso Production Website
   ============================================================ */

/* ---------- CSS CUSTOM PROPERTIES ---------- */
:root {
  /* Colors */
  --bg:       #07080f;
  --surface:  #0d0f1e;
  --surface2: #131629;
  --border:   rgba(255, 255, 255, 0.07);

  /* Accent palette */
  --accent:   #6366f1;
  --accent2:  #8b5cf6;
  --accent3:  #06b6d4;
  --glow:     rgba(99, 102, 241, 0.25);

  /* Text */
  --text:     #e2e8f0;
  --muted:    #94a3b8;

  /* Spacing scale */
  --space-xs: 0.4rem;
  --space-sm: 0.8rem;
  --space-md: 1.5rem;
  --space-lg: 3rem;
  --space-xl: 6rem;

  /* Border radius */
  --radius-sm:  8px;
  --radius-md:  12px;
  --radius-lg:  18px;
  --radius-xl:  24px;
  --radius-pill: 999px;

  /* Transitions */
  --transition-fast:   0.15s ease;
  --transition-normal: 0.2s ease;
  --transition-slow:   0.3s ease;

  /* Container */
  --max-width: 1160px;
}

/* ---------- BOX-SIZING RESET ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ---------- BASE ELEMENTS ---------- */
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---------- SKIP TO CONTENT (Accessibility) ---------- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 9999;
  background: var(--accent);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  text-decoration: none;
  transition: top var(--transition-fast);
}
.skip-link:focus {
  top: 1rem;
}

/* ---------- TYPOGRAPHY ---------- */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 700;
  color: var(--text);
}

h1 { font-size: clamp(2.4rem, 5vw, 4.2rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); }
h3 { font-size: 1.3rem; }
h4 { font-size: 1rem; }

p {
  color: var(--muted);
}

a {
  color: inherit;
}

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

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: inherit;
}

input,
textarea,
select {
  font-family: inherit;
}

/* ---------- UTILITY: GRADIENT TEXT ---------- */
.gradient-text {
  background: linear-gradient(135deg, #818cf8 0%, #a78bfa 50%, #22d3ee 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- UTILITY: VISUALLY HIDDEN (Screen readers) ---------- */
.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;
}