/* ══════════════════════════════════════════
   Ion Beacon — Shared Styles
   ══════════════════════════════════════════ */

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

:root {
  --white: #ffffff;
  --bg: #ffffff;
  --gray-fill: #ebebeb;
  --gray-border: #d4d4d4;
  --mid-gray: #888;
  --dark: #111;
  --accent: #7CCC2B;
  --accent-dark: #5ea31e;
  --accent-glow: rgba(124, 204, 43, 0.12);
  --hover-border: 3px solid var(--dark);
}

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

body {
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--dark);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Nav ── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--gray-border);
  padding: 0 2rem;
  height: 60px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-brand {
  font-weight: 700; font-size: 1.1rem; letter-spacing: -0.02em;
  text-decoration: none; color: var(--dark);
  display: flex; align-items: center; gap: 8px;
}
.nav-brand .dot {
  width: 10px; height: 10px; background: var(--accent); display: inline-block;
}
.nav-links { display: flex; gap: 0.75rem; list-style: none; align-items: center; }
.nav-links a {
  text-decoration: none; color: var(--mid-gray); font-size: 0.85rem;
  font-weight: 500; transition: color 0.2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--dark); }
.nav-sep { color: var(--gray-border); font-size: 0.85rem; font-weight: 300; user-select: none; }
.hamburger { display: none; background: none; border: none; cursor: pointer; padding: 4px; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--dark); margin: 5px 0; transition: 0.3s; }

/* ── Shared Layout ── */
section { padding: 80px 2rem; }
.container { max-width: 1060px; margin: 0 auto; }
.section-label {
  font-size: 0.7rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.14em; color: var(--accent-dark); margin-bottom: 0.6rem;
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700; letter-spacing: -0.03em;
  margin-bottom: 0.75rem; line-height: 1.15;
}
.section-desc {
  color: var(--mid-gray); font-size: 1rem;
  max-width: 580px; line-height: 1.7; margin-bottom: 2.5rem;
}

/* ── Box System (sharp, gray, hover border) ── */
.box {
  background: var(--gray-fill);
  border: 2px solid transparent;
  border-radius: 0;
  padding: 1.75rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.box:hover {
  border-color: var(--dark);
}

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px;
  border-radius: 0;
  font-weight: 600; font-size: 0.85rem;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer; border: none;
}
.btn-primary {
  background: var(--dark); color: var(--white);
}
.btn-primary:hover {
  background: var(--accent-dark);
}
.btn-outline {
  background: transparent; color: var(--dark);
  border: 2px solid var(--gray-border);
}
.btn-outline:hover {
  border-color: var(--dark);
}

/* ── Footer ── */
footer {
  padding: 2.5rem 2rem;
  text-align: center;
  border-top: 1px solid var(--gray-border);
}
footer p { font-size: 0.8rem; color: var(--mid-gray); }
footer .footer-brand {
  font-weight: 700; font-size: 1rem; color: var(--dark);
  margin-bottom: 0.4rem;
  display: flex; align-items: center; justify-content: center; gap: 6px;
}
footer .footer-brand .dot { width: 8px; height: 8px; background: var(--accent); }

/* ── Scroll Reveal ── */
.reveal {
  opacity: 0; transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.visible {
  opacity: 1; transform: translateY(0);
}

/* ── Mobile ── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-sep { display: none; }
  .hamburger { display: block; }
  .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .hamburger.active span:nth-child(2) { opacity: 0; }
  .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: absolute; top: 60px; left: 0; right: 0;
    background: rgba(255,255,255,0.97); backdrop-filter: blur(16px);
    padding: 1.25rem 2rem; gap: 0.75rem;
    border-bottom: 1px solid var(--gray-border);
  }
  section { padding: 48px 1.25rem; }
}