/* AI HUB Tilburg — Community Site
   Deliberately NOT Atlas dark/space theme.
   Warm, neutral, maker-space energy. */

:root {
  --bg:          #FAFAF8;
  --bg-tint:     #F4F2EE;
  --surface:     #FFFFFF;
  --border:      #E8E4DE;
  --text-1:      #1A1714;
  --text-2:      #4A4540;
  --text-3:      #7A736C;
  --text-4:      #A8A098;

  --accent:      #2B6CB0;
  --accent-warm: #C05621;
  --accent-green:#276749;

  --font-sans:   'Inter', system-ui, sans-serif;
  --font-mono:   'JetBrains Mono', 'Courier New', monospace;

  --r:           8px;
  --r-lg:        16px;
  --shadow:      0 1px 4px rgba(0,0,0,0.06), 0 4px 16px rgba(0,0,0,0.04);
  --shadow-lg:   0 8px 32px rgba(0,0,0,0.08);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text-1);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* LAYOUT */
.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 680px; }
.text-center { text-align: center; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
@media (max-width: 720px) { .grid-2 { grid-template-columns: 1fr; gap: 40px; } }

/* TYPOGRAPHY */
h1 { font-size: clamp(52px, 8vw, 96px); font-weight: 800; line-height: 1.0; letter-spacing: -0.03em; color: var(--text-1); }
h1 em { font-style: normal; color: var(--accent); }
h2 { font-size: clamp(28px, 4vw, 44px); font-weight: 700; line-height: 1.15; letter-spacing: -0.02em; margin-bottom: 20px; }
h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
p { color: var(--text-2); font-size: 16px; line-height: 1.75; margin-bottom: 16px; }
p:last-child { margin-bottom: 0; }
.lead { font-size: 19px; line-height: 1.7; color: var(--text-2); max-width: 56ch; margin-top: 24px; margin-bottom: 36px; }
.section-lead { font-size: 18px; color: var(--text-2); max-width: 52ch; margin-bottom: 40px; }
.sub { color: var(--text-3); font-size: 14px; margin-top: 4px; }
.link { color: var(--accent); font-size: 14px; font-weight: 500; text-decoration: none; display: inline-block; margin-top: 12px; }
.link:hover { text-decoration: underline; }

.kicker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 16px;
}

/* BUTTONS */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: var(--r);
  font-size: 15px; font-weight: 600; text-decoration: none;
  cursor: pointer; border: none; transition: all 0.15s ease;
  line-height: 1;
}
.btn-sm { padding: 8px 16px; font-size: 13px; }
.btn-lg { padding: 16px 32px; font-size: 17px; }

.btn-primary {
  background: var(--accent); color: #fff;
  box-shadow: 0 2px 8px rgba(43,108,176,0.25);
}
.btn-primary:hover { background: #2558a0; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(43,108,176,0.3); }

.btn-ghost {
  background: transparent; color: var(--text-2);
  border: 1px solid var(--border);
}
.btn-ghost:hover { border-color: var(--text-3); color: var(--text-1); }

/* NAV */
nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(250,250,248,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent);
  animation: pulse 2.5s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.85); }
}
.logo-text { font-size: 15px; font-weight: 700; color: var(--text-1); }

/* HERO */
.hero {
  padding: 96px 0 80px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -40%; right: -20%;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(43,108,176,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.hero h1 { margin-bottom: 0; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.hero-meta {
  display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
  margin-top: 32px;
  font-family: var(--font-mono); font-size: 12px;
  color: var(--text-3); letter-spacing: 0.04em;
}
.badge {
  display: inline-block;
  font-family: var(--font-mono); font-size: 11px;
  color: var(--accent); background: rgba(43,108,176,0.08);
  border: 1px solid rgba(43,108,176,0.2);
  border-radius: 999px; padding: 4px 12px;
  margin-bottom: 24px; letter-spacing: 0.06em;
}

/* SECTIONS */
.section { padding: 96px 0; }
.section-tinted { background: var(--bg-tint); }

/* PRINCIPLE CARDS */
.card-stack { display: flex; flex-direction: column; gap: 16px; }
.principle-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 24px 28px;
  position: relative;
  transition: box-shadow 0.2s;
}
.principle-card:hover { box-shadow: var(--shadow-lg); }
.number {
  font-family: var(--font-mono); font-size: 11px; font-weight: 600;
  color: var(--text-4); letter-spacing: 0.1em;
  display: block; margin-bottom: 10px;
}
.principle-card h3 { font-size: 16px; margin-bottom: 6px; }
.principle-card p { font-size: 14px; margin: 0; }

/* MEETINGS */
.meetings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 40px;
}
.meeting-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 28px 24px;
  transition: box-shadow 0.2s;
}
.meeting-card:hover { box-shadow: var(--shadow-lg); }
.meeting-icon { font-size: 28px; margin-bottom: 14px; }
.meeting-card h3 { font-size: 17px; margin-bottom: 6px; }
.meeting-card p { font-size: 15px; margin-bottom: 2px; }

/* RULES */
.rules-list {
  list-style: none;
  counter-reset: rule;
  display: flex; flex-direction: column; gap: 16px;
  margin-top: 32px;
}
.rules-list li {
  counter-increment: rule;
  display: flex; align-items: flex-start; gap: 16px;
  padding: 20px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  font-size: 16px; color: var(--text-1); line-height: 1.6;
}
.rules-list li::before {
  content: counter(rule, decimal-leading-zero);
  font-family: var(--font-mono); font-size: 11px; font-weight: 600;
  color: var(--text-4); white-space: nowrap; margin-top: 3px;
}

/* PROJECTS */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 28px;
  transition: box-shadow 0.2s;
}
.project-card:hover { box-shadow: var(--shadow-lg); }
.project-icon { font-size: 32px; margin-bottom: 14px; }
.project-placeholder {
  border-style: dashed;
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; text-align: center;
  min-height: 160px; color: var(--text-3);
}
.project-placeholder p { color: var(--text-3); font-size: 14px; }

/* JOIN */
.join-section {
  background: var(--text-1);
  color: #fff;
  padding: 96px 0;
}
.join-section .kicker { color: rgba(255,255,255,0.4); }
.join-section h2 { color: #fff; }
.join-section p { color: rgba(255,255,255,0.65); max-width: 44ch; margin: 0 auto 36px; }
.join-sub { font-size: 14px; color: rgba(255,255,255,0.4); margin-top: 20px; text-align: center; }

/* FOOTER */
footer {
  background: var(--bg-tint);
  border-top: 1px solid var(--border);
  padding: 40px 0;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: center;
}
.footer-copy {
  grid-column: 1 / -1;
  font-size: 12px; color: var(--text-4);
  font-family: var(--font-mono);
}
.footer-copy a { color: var(--accent); text-decoration: none; }
.footer-left { display: flex; flex-direction: column; gap: 4px; }
.footer-right { text-align: right; display: flex; flex-direction: column; gap: 4px; align-items: flex-end; }
.footer-sub { font-size: 12px; color: var(--text-3); }
.footer-right a { color: var(--accent); font-size: 14px; font-weight: 500; text-decoration: none; }

@media (max-width: 600px) {
  .footer-inner { grid-template-columns: 1fr; }
  .footer-right { text-align: left; align-items: flex-start; }
  .footer-copy { grid-column: 1; }
  .hero { padding: 60px 0 56px; }
  .section { padding: 64px 0; }
  .join-section { padding: 64px 0; }
}