/* ========== 财知智库 - 共享顶部导航栏 ========== */
.shared-nav {
    width: 100%;
    height: 56px;
    padding: 0 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    background: #fff;
    box-shadow: 0 1px 8px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-sizing: border-box;
}

/* Logo */
.sn-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    flex-shrink: 0;
}
.sn-logo-img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
}
.sn-logo-text {
    font-size: 18px;
    font-weight: 600;
    color: #222;
    white-space: nowrap;
}

/* Module buttons */
.sn-modules {
    display: flex;
    align-items: center;
    gap: 2px;
    flex: 1;
    justify-content: center;
}
.sn-module-btn {
    padding: 6px 14px;
    border: none;
    background: none;
    color: #555;
    font-size: 13px;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.2s;
    white-space: nowrap;
    font-family: inherit;
}
.sn-module-btn:hover {
    background: rgba(22,93,255,0.08);
    color: #165DFF;
}
.sn-module-btn.sn-active {
    color: #165DFF;
    font-weight: 600;
    background: rgba(22,93,255,0.06);
}

/* User area */
.sn-user-area {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
.sn-user-info {
    display: flex;
    align-items: center;
    gap: 8px;
}
.sn-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(145deg, #42a5f5, #1976d2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    flex-shrink: 0;
}
.sn-username {
    font-size: 13px;
    color: #333;
    max-width: 100px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.sn-badge {
    padding: 2px 8px;
    border-radius: 8px;
    font-size: 11px;
    color: #fff;
    white-space: nowrap;
}
.sn-badge.sn-level-1 { background: #999; }
.sn-badge.sn-level-2 { background: linear-gradient(145deg, #42a5f5, #1976d2); }
.sn-badge.sn-level-3 { background: linear-gradient(145deg, #ba68c8, #7b1fa2); }
.sn-badge.sn-level-4 { background: linear-gradient(145deg, #f7d060, #c89c20); }
.sn-alert {
    padding: 2px 8px;
    border-radius: 8px;
    font-size: 11px;
    background: #fff3e0;
    color: #e65100;
    border: 1px solid #ffcc80;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.2s;
}
.sn-alert:hover { background: #ffe0b2; }
.sn-logout {
    padding: 4px 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    color: #666;
    font-size: 12px;
    cursor: pointer;
    background: #fff;
    transition: all 0.2s;
    font-family: inherit;
}
.sn-logout:hover { border-color: #ff6b6b; color: #ff6b6b; }

/* Login/Register (not logged in) */
.sn-btn-login {
    padding: 6px 20px;
    border: 1px solid #165DFF;
    border-radius: 6px;
    color: #165DFF;
    font-size: 13px;
    cursor: pointer;
    background: #fff;
    transition: all 0.2s;
    font-family: inherit;
}
.sn-btn-login:hover { background: #165DFF; color: #fff; }
.sn-btn-register {
    padding: 6px 20px;
    background: #165DFF;
    border: none;
    border-radius: 6px;
    color: #fff;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
}
.sn-btn-register:hover { background: #0e4edc; }

/* Mobile */
@media (max-width: 768px) {
    .shared-nav {
        height: auto;
        min-height: 48px;
        flex-wrap: wrap;
        padding: 8px 12px;
        gap: 8px;
    }
    .sn-logo { order: 1; }
    .sn-logo-text { font-size: 16px; }
    .sn-user-area { order: 2; margin-left: auto; }
    .sn-username { display: none; }
    .sn-modules {
        order: 3;
        width: 100%;
        justify-content: flex-start;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        gap: 0;
        padding-bottom: 4px;
    }
    .sn-modules::-webkit-scrollbar { height: 2px; }
    .sn-module-btn { font-size: 12px; padding: 4px 10px; flex-shrink: 0; }
}
@media (max-width: 480px) {
    .sn-badge, .sn-alert { font-size: 10px; padding: 2px 6px; }
    .sn-logout { padding: 3px 8px; font-size: 11px; }
    .sn-btn-login, .sn-btn-register { padding: 4px 14px; font-size: 12px; }
}