/* ============================================================
   FUMOCA — UNIFIED NAVIGATION STYLES
   Pairs with js/modules/nav.js. Mobile-first: topbar + hamburger
   drawer under 900px, persistent sidebar at 900px and above.
   ============================================================ */

#fumoca-nav, #fumoca-nav * { box-sizing: border-box; }

/* Reserve layout space so injected nav doesn't overlap content */
body.fnav-has-nav { padding-top: 56px; }
@media (min-width: 900px) {
  body.fnav-has-nav { padding-top: 0; padding-left: 240px; }
}
body.fnav-scroll-lock { overflow: hidden; }

/* ---------- shared link styles ---------- */
.fnav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 14px; border-radius: var(--r2);
  color: var(--muted); text-decoration: none;
  font-family: var(--font-body); font-size: 14px; font-weight: 600;
  border: 1px solid transparent; transition: background var(--trans), color var(--trans), border-color var(--trans), transform 0.12s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
}
.fnav-item:active { transform: scale(0.97); }
.fnav-item:hover { background: rgba(255,255,255,.05); color: var(--text); border-color: var(--border); }
.fnav-item.fnav-active { background: var(--neon2); color: var(--neon); border-color: var(--neon-b); }
.fnav-icon { font-size: 17px; width: 22px; text-align: center; flex-shrink: 0; }
.fnav-label { flex: 1; }
.fnav-badge {
  font-size: 10px; font-weight: 700; background: var(--rose); color: #fff;
  border-radius: 999px; padding: 2px 6px; min-width: 18px; text-align: center;
}
.fnav-section-label {
  font-family: var(--font-body); font-size: 11px; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase; color: var(--dim); padding: 16px 14px 6px;
}
.fnav-logo {
  font-family: var(--font-display); font-size: 22px; letter-spacing: .05em;
  color: var(--text); text-decoration: none; display: block;
}
.fnav-logo span { color: var(--neon); }
.fnav-create-btn {
  display: block; text-align: center; margin: 16px 14px;
  padding: 12px; border-radius: var(--r2); background: var(--neon);
  color: var(--black); font-weight: 700; text-decoration: none; font-size: 14px;
  transition: transform 0.12s cubic-bezier(0.34, 1.56, 0.64, 1), opacity var(--trans);
}
.fnav-create-btn:active { transform: scale(0.96); }
.fnav-drawer-spacer { flex: 1; min-height: 12px; }

/* ---------- mobile topbar ---------- */
.fnav-topbar {
  position: fixed; top: 0; left: 0; right: 0; height: 56px; z-index: 200;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 14px; background: rgba(5,7,11,.92); backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
@media (min-width: 900px) { .fnav-topbar { display: none; } }

.fnav-burger {
  width: 40px; height: 40px; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 5px;
  background: transparent; border: none; cursor: pointer; padding: 0;
  transition: transform 0.12s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.fnav-burger:active { transform: scale(0.88); }
.fnav-burger span {
  display: block; width: 20px; height: 2px; background: var(--text);
  border-radius: 2px; transition: var(--trans);
}
.fnav-burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.fnav-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.fnav-burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.fnav-bell {
  width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
  color: var(--text); text-decoration: none; font-size: 18px; position: relative;
}
.fnav-bell .fnav-badge { position: absolute; top: 4px; right: 2px; }

/* ---------- mobile drawer ---------- */
.fnav-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,.6); z-index: 210;
  opacity: 0; pointer-events: none; transition: opacity var(--trans);
}
.fnav-backdrop.fnav-open { opacity: 1; pointer-events: auto; }

.fnav-drawer {
  position: fixed; top: 0; bottom: 0; left: 0; width: 280px; max-width: 82vw;
  background: var(--surface); border-right: 1px solid var(--border);
  z-index: 220; display: flex; flex-direction: column; padding: 16px 10px;
  transform: translateX(-100%); transition: transform .32s cubic-bezier(0.22, 1, 0.36, 1); overflow-y: auto;
}
.fnav-drawer.fnav-open { transform: translateX(0); }
@media (min-width: 900px) { .fnav-drawer, .fnav-backdrop { display: none; } }

.fnav-drawer-head { display: flex; align-items: center; justify-content: space-between; padding: 4px 8px 16px; }
.fnav-close { background: transparent; border: none; color: var(--muted); font-size: 18px; cursor: pointer; padding: 6px; }

.fnav-drawer-user {
  display: flex; align-items: center; gap: 12px; padding: 10px 10px 16px; margin-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.fnav-avatar {
  width: 40px; height: 40px; border-radius: 50%; background: var(--surface3);
  background-size: cover; background-position: center;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; color: var(--text); flex-shrink: 0;
}
.fnav-username { font-size: 14px; font-weight: 700; color: var(--text); }
.fnav-handle { font-size: 12px; color: var(--muted); }

/* ---------- desktop sidebar ---------- */
.fnav-sidebar {
  display: none;
}
@media (min-width: 900px) {
  .fnav-sidebar {
    display: flex; flex-direction: column;
    position: fixed; top: 0; bottom: 0; left: 0; width: 240px;
    background: var(--surface); border-right: 1px solid var(--border);
    padding: 20px 12px; z-index: 100; overflow-y: auto;
  }
  .fnav-sidebar .fnav-logo { padding: 4px 10px 20px; }
}