/* ============================================================
   Unified Topbar — shared across /, /me, /pricing, /admin.
   Workspace topbar keeps its own tooling but reuses these tokens.
   See: docs/unified-topbar-design.md, docs/design-system.md
   ============================================================ */

#topbar-mount {
  min-height: var(--topbar-height, 56px);
}

.bt-topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--topbar-height, 56px);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0 var(--space-5);
  background: var(--bg-elev);
  border-bottom: 1px solid var(--border);
  color: var(--text);
  font-size: 14px;
}

.bt-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: inherit;
  font-weight: 700;
  font-size: 15px;
  padding: 6px 8px;
  border-radius: var(--radius-md);
  transition: background var(--dur-fast) var(--ease-out);
}
.bt-brand:hover { background: var(--surface-hover); }
.bt-brand-mark {
  width: 22px; height: 22px;
  color: var(--accent);
}

.bt-nav {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  margin-left: var(--space-2);
}
.bt-nav a {
  text-decoration: none;
  color: var(--text-muted);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
}
.bt-nav a:hover { background: var(--surface-hover); color: var(--text); }
.bt-nav a.is-active {
  background: var(--accent-soft);
  color: var(--accent);
}

.bt-spacer { flex: 1; }

.bt-right {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

/* Credit chip */
.bt-credit {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 10px;
  border-radius: var(--radius-pill);
  background: var(--accent-softer);
  color: var(--accent);
  border: 1px solid var(--accent-soft);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  transition: background var(--dur-fast) var(--ease-out);
}
.bt-credit:hover { background: var(--accent-soft); }
.bt-credit.is-low {
  color: var(--danger);
  background: rgba(192,57,43,0.10);
  border-color: rgba(192,57,43,0.25);
}

/* Theme toggle */
.bt-theme {
  width: 34px; height: 34px;
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
}
.bt-theme:hover { background: var(--surface-hover); color: var(--text); }
.bt-theme .bt-icon-sun { display: none; }
.bt-theme .bt-icon-moon { display: inline; }
html[data-theme="dark"] .bt-theme .bt-icon-sun { display: inline; }
html[data-theme="dark"] .bt-theme .bt-icon-moon { display: none; }

/* Auth buttons (logged-out) */
.bt-auth-out {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.bt-auth-out .bt-link {
  text-decoration: none;
  padding: 7px 12px;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-weight: 500;
  font-size: 14px;
  transition: background var(--dur-fast) var(--ease-out);
}
.bt-auth-out .bt-link:hover { background: var(--surface-hover); color: var(--text); }
.bt-auth-out .bt-cta {
  text-decoration: none;
  padding: 7px 14px;
  border-radius: var(--radius-md);
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  transition: background var(--dur-fast) var(--ease-out);
}
.bt-auth-out .bt-cta:hover { background: var(--accent-strong); }

/* User dropdown (logged-in) */
.bt-user {
  position: relative;
}
.bt-user-trigger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 8px 5px 5px;
  border-radius: var(--radius-pill);
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  color: var(--text);
  cursor: pointer;
  font-size: 13px;
  transition: background var(--dur-fast) var(--ease-out);
}
.bt-user-trigger:hover { background: var(--surface-hover); }
.bt-user-avatar {
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 12px;
}
.bt-user-arrow { color: var(--text-muted); font-size: 10px; }

.bt-user-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 220px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2);
  padding: 6px;
  display: none;
  z-index: 60;
}
.bt-user-menu.is-open { display: block; }
.bt-user-email {
  padding: 8px 10px;
  font-size: 12px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.bt-user-menu a, .bt-user-menu button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 8px 10px;
  border-radius: var(--radius-md);
  background: transparent;
  border: none;
  color: var(--text);
  font-size: 14px;
  text-decoration: none;
  cursor: pointer;
}
.bt-user-menu a:hover, .bt-user-menu button:hover { background: var(--surface-hover); }
.bt-user-menu .bt-menu-sep {
  height: 1px;
  background: var(--border);
  margin: 4px 0;
}
.bt-user-menu .bt-menu-danger { color: var(--danger); }

.bt-user-menu .bt-menu-toggle {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
}
.bt-user-menu .bt-toggle-state {
  font-size: 11px; font-weight: 700; letter-spacing: .06em;
  padding: 2px 8px; border-radius: 999px;
  background: var(--surface-hover); color: var(--text-muted);
  border: 1px solid var(--border);
}
.bt-user-menu .bt-menu-toggle.is-on .bt-toggle-state {
  background: var(--accent); color: #fff; border-color: var(--accent);
}

/* 데스크탑 기본 — 게스트 햄버거 메뉴 + 드롭다운 내 nav 항목 숨김 */
.bt-guest { display: none; }
.bt-menu-nav { display: none; }

/* Responsive — 모바일에선 인라인 nav 와 인라인 auth/theme 을 통째로 숨기고,
   대신 ☰ 또는 👤 드롭다운 한 곳에서 다 진입하게. */
@media (max-width: 700px) {
  .bt-topbar { padding: 0 var(--space-3); gap: var(--space-2); }
  .bt-nav { display: none; }
  .bt-theme { display: none; }
  .bt-auth-out { display: none; }
  /* 인라인 크레딧 chip 은 숨기고 드롭다운 내부 행으로만 노출 */
  .bt-credit { display: none; }
  .bt-guest { display: inline-flex; align-items: center; position: relative; }
  .bt-menu-nav {
    display: flex; flex-direction: column;
    gap: 2px;
    margin-bottom: 4px;
  }
  .bt-menu-nav a {
    display: block; padding: 10px 12px;
    color: var(--text); text-decoration: none;
    border-radius: 6px; font-size: 14px;
  }
  .bt-menu-nav a:hover { background: var(--surface-hover); }
  .bt-menu-nav a[aria-current="page"] {
    background: var(--surface-hover); color: var(--accent); font-weight: 600;
  }
}

/* Guest 햄버거 트리거 + 메뉴 — 모바일에서만 노출됨(@media 으로 enable) */
.bt-guest-trigger {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  font-size: 18px; line-height: 1;
  cursor: pointer;
}
.bt-guest-trigger:hover { background: var(--surface-hover); }
.bt-guest-menu {
  position: absolute; right: 0; top: calc(100% + 6px);
  min-width: 200px;
}

/* 드롭다운 내 크레딧 잔액 행 — 데스크탑/모바일 둘 다 노출(중복 OK, 한쪽은 어차피 chip 숨김). */
.bt-user-menu .bt-credit-menu {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 12px;
  text-decoration: none; color: var(--text);
  border-radius: 6px;
  background: var(--surface-hover);
  font-size: 13px; font-weight: 500;
  margin-bottom: 4px;
}
.bt-user-menu .bt-credit-menu:hover { background: var(--accent-soft); }
.bt-user-menu .bt-credit-menu .bt-credit-menu-amount {
  font-weight: 700; font-variant-numeric: tabular-nums;
  color: var(--accent);
}
.bt-user-menu .bt-credit-menu.is-low .bt-credit-menu-amount { color: var(--danger, #c0392b); }