/* css/style.css — Conference FV design tokens & base styles
   Design system reference: prisma.io (dark theme, fixed blurred nav, teal accent)
   Font substitution: Mona Sans -> Space Grotesk (not available on Google Fonts) */
:root {
  --color-accent: #14B8A6;
  --color-accent-hover: #2DD4BF;
  --color-heading: #FFFFFF;
  --color-body: #CBD5E1;
  --color-secondary: #8B95A5;
  --color-tertiary: #64748B;
  --color-border: rgba(255, 255, 255, 0.10);
  --color-surface: #12161F;
  --color-bg: #0A0E17;
  --color-bg-alt: #0D1220;
  --color-footer: #05070C;
  --color-destructive: #F87171;
  --color-on-accent: #FFFFFF;

  /* legacy aliases kept so existing inline var() references still resolve */
  --color-primary: var(--color-accent);
  --color-fg: var(--color-heading);
  --color-muted: var(--color-surface);
  --color-muted-fg: var(--color-secondary);
  --color-on-primary: var(--color-on-accent);

  --font-heading: "Space Grotesk", sans-serif;
  --font-body: "Inter", sans-serif;

  --space-1: 4px;  --space-2: 8px;  --space-3: 12px; --space-4: 16px;
  --space-5: 24px; --space-6: 32px; --space-7: 40px; --space-8: 48px; --space-9: 104px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --container-max: 1200px;
  --nav-height: 64px;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px 0 rgba(0, 0, 0, 0.35);
  --glow-accent: 0 0 0 1px rgba(20, 184, 166, 0.35), 0 4px 20px 0 rgba(20, 184, 166, 0.10);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-body);
  background: var(--color-bg);
  font-feature-settings: "cv01", "cv02", "cv06", "cv08";
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 var(--space-4);
  color: var(--color-heading);
}
h1 { font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 700; line-height: 1.13; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); font-weight: 700; letter-spacing: -0.01em; }
h3 { font-size: 1.25rem; font-weight: 600; }
p { margin: 0 0 var(--space-4); }
a { color: var(--color-accent); }
a:focus-visible, button:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.band { padding: var(--space-8) 0; }
@media (min-width: 768px) { .band { padding: var(--space-9) 0; } }
@media (max-width: 640px) { .band { padding: var(--space-6) 0; } }

/* Hero band: fixed nav overlays it transparently, so it needs extra top clearance */
main > .band:first-child { padding-top: calc(var(--nav-height) + var(--space-8)); }
@media (min-width: 768px) { main > .band:first-child { padding-top: calc(var(--nav-height) + var(--space-9)); } }

.band--navy {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse 900px 420px at 50% 0%, rgba(20, 184, 166, 0.22), transparent 65%),
    var(--color-bg);
  color: #FFFFFF;
}
.band--navy::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.9) 0%, transparent 85%);
  pointer-events: none;
}
.band--navy .container { position: relative; z-index: 1; }
.band--navy h1, .band--navy h2, .band--navy h3 { color: #FFFFFF; }
.band--navy a:not(.btn) { color: #99F6E4; }
.band--muted { background: var(--color-bg-alt); }
.band--white { background: var(--color-bg); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color 150ms ease, color 150ms ease, border-color 150ms ease;
}
.btn--primary { background: var(--color-accent); color: #FFFFFF; }
.btn--primary:hover { background: var(--color-accent-hover); }
.btn--ghost { background: transparent; border-color: var(--color-border); color: var(--color-heading); }
.btn--ghost:hover { border-color: var(--color-accent); color: var(--color-accent); }

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

.grid {
  display: grid;
  gap: var(--space-5);
}
@media (min-width: 640px) { .grid--2 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 640px) { .grid--3 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 768px) { .grid--3 { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 640px) { .grid--4 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .grid--4 { grid-template-columns: repeat(4, 1fr); } }

.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin: 0 0 var(--space-4);
}
table { width: 100%; min-width: 480px; border-collapse: collapse; background: var(--color-surface); }
.table-scroll table { border: none; border-radius: 0; }
th, td { text-align: left; padding: var(--space-3) var(--space-4); border-bottom: 1px solid var(--color-border); font-size: 0.9375rem; }
th { font-family: var(--font-body); font-weight: 600; color: var(--color-heading); background: rgba(255, 255, 255, 0.03); }
td { color: var(--color-body); }

.avatar {
  width: 96px; height: 96px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-accent); color: #FFFFFF;
  font-family: var(--font-heading); font-weight: 700; font-size: 1.75rem;
  margin-bottom: var(--space-3);
}
.avatar-photo {
  width: 96px; height: 96px; border-radius: 50%;
  object-fit: cover; object-position: center top;
  margin-bottom: var(--space-3);
  display: block;
}