:root {
  --navy: #0B2D5C;
  --blue: #0072CE;
  --light-blue: #6CACE4;
  --bg: #F6F8FB;
  --surface: #FFFFFF;
  --ink: #12203A;
  --slate: #57708C;
  --border: #DCE4EE;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Source Serif 4', serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.6;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 500;
  color: var(--navy);
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2.2rem, 4vw, 3.4rem); line-height: 1.1; font-weight: 700; }
h2 { font-size: clamp(1.5rem, 2.5vw, 2rem); }
h3 { font-size: 1.15rem; }

p { margin: 0 0 1em; color: var(--slate); }

a { color: var(--blue); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue);
  margin: 0 0 0.75em;
}

/* Top bar */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2rem;
  position: sticky;
  top: 0;
  background: rgba(246, 248, 251, 0.9);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 500;
  color: var(--navy);
  text-decoration: none;
  font-size: 1.05rem;
}

.brand-mark { width: 36px; height: 36px; object-fit: contain; }

.nav { display: flex; gap: 1.75rem; }

.nav a {
  color: var(--ink);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 0.95rem;
}

.nav a:hover { color: var(--blue); }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 0.5rem; }
.nav-toggle span {
  display: block; width: 22px; height: 2px; background: var(--navy); margin: 5px 0;
}

/* Hero */
.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 2rem;
  padding: 4rem 2rem 5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-sub { max-width: 42ch; font-size: 1.05rem; }

.hero-actions { display: flex; gap: 1rem; margin: 1.75rem 0; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  border-radius: 6px;
  font-family: var(--font-display);
  font-weight: 500;
  text-decoration: none;
  font-size: 0.95rem;
}

.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--blue); }

.btn-ghost { border: 1px solid var(--border); color: var(--navy); }
.btn-ghost:hover { border-color: var(--blue); color: var(--blue); }

.hero-meta {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--slate);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
}

.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--blue); display: inline-block; }

.hero-orbit svg { width: 100%; height: auto; }

.pendulum-ball { transform-origin: 0 0; }
.pendulum-ball circle[pointer-events="all"] { cursor: grab; touch-action: none; }
.pendulum-ball:active circle[pointer-events="all"] { cursor: grabbing; }

/* Sections */
section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

.about-grid { max-width: 60ch; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
  text-decoration: none;
  transition: border-color 0.15s ease;
}

.card:hover { border-color: var(--blue); }

.card-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--blue);
}

.card h3 { margin-top: 0.5rem; color: var(--ink); }
.card p { margin: 0; font-size: 0.95rem; }

/* Events */
.event-list { list-style: none; margin: 1.5rem 0 0; padding: 0; }

.event-list li {
  display: flex;
  gap: 1.5rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--border);
}

.event-date {
  font-family: var(--font-mono);
  color: var(--blue);
  font-weight: 500;
  min-width: 3rem;
}

.event-list h3 { margin: 0 0 0.25rem; }
.event-list p { margin: 0; font-size: 0.95rem; }

/* Officers */
.officer-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
}

.officer-avatar {
  width: 48px; height: 48px; border-radius: 50%;
  background: linear-gradient(135deg, var(--navy), var(--light-blue));
  margin-bottom: 1rem;
}

.officer-card p { font-size: 0.95rem; margin: 0; }

/* Join */
.join { text-align: center; max-width: 640px; }
.join-sub { margin: 0 auto 1.75rem; }

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
}

.footer p {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--slate);
  margin: 0;
}

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding-top: 2.5rem; }
  .hero-orbit { order: -1; max-width: 280px; margin: 0 auto; }
  .nav { display: none; }
  .nav.open {
    display: flex; flex-direction: column; position: absolute;
    top: 100%; left: 0; right: 0; background: var(--surface);
    padding: 1rem 2rem; border-bottom: 1px solid var(--border);
  }
  .nav-toggle { display: block; }
}