/* ================================================
   ChangoBibVis 标题栏用户区样式
   版本: 20260121_v1
   说明: 登录区、头像、菜单与主题切换按钮
   ================================================ */

.bibvis-user-area {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin-left: 0.25rem;
}

.bibvis-user-info {
    position: relative;
    display: flex;
    align-items: center;
}

.bibvis-user-btn {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.6rem;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: #ffffff;
    font-size: 0.8rem;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.bibvis-user-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    color: #ffffff;
}

.bibvis-user-avatar {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid rgba(255, 255, 255, 0.6);
}

.bibvis-user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    padding-top: 0.5rem;
    display: none;
    z-index: 12000;
}

.bibvis-header {
    position: relative;
    z-index: 11000;
}

.bibvis-user-dropdown-inner {
    background: rgba(15, 23, 42, 0.98);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 0.5rem;
    min-width: 160px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.bibvis-user-info:hover .bibvis-user-dropdown {
    display: block;
}

.bibvis-dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.7rem;
    color: #cbd5f5;
    text-decoration: none;
    border-radius: 8px;
    font-size: 0.8rem;
    transition: all 0.2s ease;
}

.bibvis-dropdown-item:hover {
    background: rgba(59, 130, 246, 0.2);
    color: #ffffff;
}

.bibvis-dropdown-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.12);
    margin: 0.3rem 0;
}

.bibvis-auth-links {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.bibvis-auth-link {
    padding: 0.35rem 0.9rem;
    border-radius: 20px;
    font-size: 0.8rem;
    text-decoration: none;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.bibvis-auth-link.login {
    border: 1px solid rgba(255, 255, 255, 0.5);
    color: #ffffff;
    background: transparent;
}

.bibvis-auth-link.login:hover {
    background: rgba(255, 255, 255, 0.2);
}

.bibvis-auth-link.register {
    background: rgba(255, 255, 255, 0.9);
    color: #0f172a;
    border: 1px solid rgba(255, 255, 255, 0.9);
}

.bibvis-auth-link.register:hover {
    background: #ffffff;
}

html.mode-light .bibvis-user-btn,
body.light-mode .bibvis-user-btn {
    background: rgba(0, 0, 0, 0.08);
    border-color: rgba(0, 0, 0, 0.12);
    color: #334155;
}

html.mode-light .bibvis-user-btn:hover,
body.light-mode .bibvis-user-btn:hover {
    background: rgba(0, 0, 0, 0.12);
    color: #1e293b;
}

html.mode-light .bibvis-auth-link.login,
body.light-mode .bibvis-auth-link.login {
    border-color: rgba(0, 0, 0, 0.2);
    color: #334155;
}

html.mode-light .bibvis-auth-link.register,
body.light-mode .bibvis-auth-link.register {
    background: rgba(0, 0, 0, 0.85);
    border-color: rgba(0, 0, 0, 0.85);
    color: #ffffff;
}