/* ── NAV ── */
nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.92); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 76px 0 48px;
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.nav-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.nav-logo-mark { width: 28px; height: 28px; border-radius: 50%; background: var(--accent-light); border: 1.5px solid var(--accent); display: flex; align-items: center; justify-content: center; font-family: var(--sans); font-size: 11px; font-weight: 700; color: var(--accent); }
.nav-logo-name { font-family: var(--sans); font-size: 17px; font-weight: 700; letter-spacing: -0.01em; }
.nav-links { display: flex; gap: 28px; list-style: none; position: absolute; left: 50%; transform: translateX(-50%); }
.nav-links a { font-family: var(--sans); font-size: 13px; font-weight: 500; letter-spacing: 0.01em; text-decoration: none; color: var(--ink-light); transition: color 0.2s; }
.nav-links a:hover { color: var(--accent); }

/* ── HAMBURGER ── */
.hamburger { position: fixed; top: 14px; right: 14px; z-index: 200; width: 40px; height: 40px; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-sm); cursor: pointer; display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 5px; transition: background 0.2s, box-shadow 0.2s; box-shadow: var(--shadow); }
.hamburger:hover { background: var(--accent-light); border-color: var(--accent); }
.hamburger span { display: block; width: 16px; height: 1.5px; background: var(--ink); border-radius: 2px; transition: transform 0.3s ease, opacity 0.2s ease, width 0.3s ease; transform-origin: center; }
.hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; width: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ── DRAWER ── */
.drawer-overlay { position: fixed; inset: 0; background: rgba(17,19,24,0.4); backdrop-filter: blur(4px); z-index: 150; opacity: 0; pointer-events: none; transition: opacity 0.3s ease; }
.drawer-overlay.open { opacity: 1; pointer-events: all; }
.drawer { position: fixed; top: 0; right: 0; height: 100%; width: 272px; background: var(--bg); border-left: 1px solid var(--border); z-index: 160; transform: translateX(100%); transition: transform 0.35s cubic-bezier(0.4,0,0.2,1); display: flex; flex-direction: column; padding: 68px 0 36px; }
.drawer.open { transform: translateX(0); }
.drawer-logo { padding: 0 24px 24px; border-bottom: 1px solid var(--border); margin-bottom: 12px; }
.drawer-logo-name { font-family: var(--sans); font-size: 15px; font-weight: 700; color: var(--ink); display: block; }
.drawer-nav {
  flex: 1; overflow-y: auto;
  position: static; top: auto; z-index: auto;
  background: none; backdrop-filter: none;
  border-bottom: none; padding: 0;
  display: block; height: auto;
}
.drawer-nav ul { list-style: none; padding: 8px 12px; display: flex; flex-direction: column; gap: 2px; }
.drawer-nav li a { display: flex; align-items: center; gap: 10px; padding: 10px 12px; text-decoration: none; color: var(--ink-light); font-family: var(--sans); font-size: 13px; font-weight: 500; border-radius: var(--radius-sm); transition: background 0.15s, color 0.15s; }
.drawer-nav li a:hover { background: var(--accent-light); color: var(--accent); }
.drawer-nav li a .d-num { font-size: 11px; color: var(--ink-faint); min-width: 22px; }
.drawer-footer { padding: 20px 24px 0; font-family: var(--body); font-size: 11px; color: var(--ink-faint); border-top: 1px solid var(--border); line-height: 1.8; }

/* ── DRAWER ENTERPRISE CTA (学生側 drawer から企業サイトへの遷移リンク) ── */
.drawer-enterprise-cta {
  display: flex; justify-content: center; align-items: center; gap: 6px;
  margin: 12px 16px 16px;
  background: #4a2d7a; color: #ffffff;
  font-family: var(--sans); font-size: 13px; font-weight: 700;
  letter-spacing: 0.02em; text-decoration: none;
  padding: 12px 16px; border-radius: var(--radius-sm);
  border: 1.5px solid #35205a;
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
  box-shadow: 0 1px 4px rgba(74,45,122,0.25);
}
.drawer-enterprise-cta:hover {
  background: #35205a; border-color: #25163f;
  transform: translateY(-1px);
  box-shadow: 0 3px 10px rgba(74,45,122,0.35);
}

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  nav { padding: 0 68px 0 20px; }
  .nav-links { display: none; }
}